{"id":4077,"date":"2026-03-31T11:17:21","date_gmt":"2026-03-31T11:17:21","guid":{"rendered":"https:\/\/ksquareinstitute.in\/blog\/?p=4077"},"modified":"2026-04-03T12:53:55","modified_gmt":"2026-04-03T12:53:55","slug":"body-fluids-and-circulation-class-11-pdf","status":"publish","type":"post","link":"https:\/\/ksquareinstitute.in\/blog\/body-fluids-and-circulation-class-11-pdf\/","title":{"rendered":"Body Fluids and Circulation Class 11 PDF: Complete NEET Revision Guide"},"content":{"rendered":"\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n    <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n    <link href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300..600;1,9..40,300..600&#038;family=JetBrains+Mono:wght@400;500;700&#038;family=Plus+Jakarta+Sans:wght@400;600;700;800&#038;display=swap\" rel=\"stylesheet\">\n    <style>\n        :root {\n            --accent: #e8600a;\n            --accent-light: #fff3ec;\n            --accent-mid: #fde3cc;\n            --dark: #111827;\n            --text: #1a1a1a;\n            --text-muted: #4b5563;\n            --border: #e5e7eb;\n            --green-bg: #f0fdf4;\n            --green-border: #16a34a;\n            --blue-bg: #eff6ff;\n            --blue-border: #3b82f6;\n        }\n\n        * { box-sizing: border-box; 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color: white; display: inline-flex; align-items: center; gap: 10px; padding: 12px 24px; border-radius: 8px; text-decoration: none; font-weight: 600; margin-top: 20px; }\n    <\/style>\n<\/head>\n<body>\n\n<div class=\"content-wrapper\">\n    <div class=\"container\">\n\n        <h2><div class=\"badge\">01<\/div><span>Introduction to Body Fluids and Circulation<\/span><\/h2>\n        \n\n        <p>Mastering the concepts of <strong>body fluids and circulation class 11 pdf<\/strong> is essential for every medical aspirant. For complex organisms to survive, every cell needs a constant supply of nutrients and oxygen, alongside an efficient system to remove metabolic wastes like CO<sub>2<\/sub>. Humans utilize a sophisticated fluid-based transport system consisting of blood and lymph. This guide provides a high-yield breakdown of the circulatory machinery, from the composition of plasma to the electrical rhythm of the heart, ensuring you are well-prepared for the NEET 2026 exam.<\/p>\n\n        <p>Transportation in living beings varies with complexity. While simple organisms like sponges use water from their surroundings for exchange, higher animals have evolved dedicated body fluids. In this <strong>body fluids and circulation class 11 pdf<\/strong> summary, we explore the physiological logic of &#8220;Double Circulation&#8221; and the diagnostic power of the Electrocardiograph (ECG).<\/p>\n\n        <div class=\"card-grid\">\n            <div class=\"card\">\n                <span class=\"card-title\">BLOOD<\/span>\n                A fluid connective tissue consisting of a fluid matrix (plasma) and formed elements (RBCs, WBCs, and Platelets).\n            <\/div>\n            <div class=\"card\">\n                <span class=\"card-title\">LYMPH<\/span>\n                Tissue fluid that helps in the transport of fats and provides immune defense, returning interstitial fluid back to the venous system.\n            <\/div>\n        <\/div>\n\n        <h2><div class=\"badge\">02<\/div><span>Blood Composition: Plasma and Formed Elements<\/span><\/h2>\n        <p>Blood makes up about 7-8% of human body weight. It is divided into two main components: Plasma (55%) and Formed Elements (45%). Understanding the proteins within plasma is a frequent NEET testing area.<\/p>\n\n        <div class=\"table-container\">\n            <table>\n                <thead>\n                    <tr>\n                        <th>Component<\/th>\n                        <th>Sub-type \/ Feature<\/th>\n                        <th>Primary Function<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Plasma<\/td>\n                        <td>Albumin<\/td>\n                        <td>Maintenance of osmotic balance (preventing edema).<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Plasma<\/td>\n                        <td>Globulin<\/td>\n                        <td>Defense mechanism (Antibodies \/ Immunity).<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Plasma<\/td>\n                        <td>Fibrinogen<\/td>\n                        <td>Necessary for blood clotting or coagulation.<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Formed Elements<\/td>\n                        <td>Erythrocytes (RBCs)<\/td>\n                        <td>Transport of respiratory gases (O<sub>2<\/sub>, CO<sub>2<\/sub>).<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Formed Elements<\/td>\n                        <td>Leukocytes (WBCs)<\/td>\n                        <td>Immune response and phagocytosis.<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n        <\/div>\n\n        <div class=\"formula-dark\">\n            <span class=\"formula-dark-label\">WBC CLASSIFICATION<\/span>\n            <div class=\"formula-dark-content\">\n                Granulocytes: Neutrophils, Eosinophils, Basophils <br>\n                Agranulocytes: Lymphocytes, Monocytes\n            <\/div>\n        <\/div>\n\n        <div class=\"callout tip\">\n            <div class=\"callout-pill\">TIP<\/div>\n            <strong>Neutrophils<\/strong> are the most abundant WBCs (60-65%) and act as the first line of defense through phagocytosis. <strong>Basophils<\/strong> are the least abundant (0.5-1%) and secrete histamine and heparin during inflammatory reactions.\n        <\/div>\n\n        <!-- Promotional Banner 1 -->\n        <a href=\"https:\/\/courses.ksquare.co.in\/new-courses\/3-mission-180-neet-physics-rankers-batch\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" style=\"display:block; margin-bottom:40px;\">\n          <img decoding=\"async\" src=\"https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/03\/Course-Poromo-Banner-scaled.png\" alt=\"Mission 180 NEET Physics Rankers Batch - KSquare Career Institute\" style=\"width:100%; height:auto; border-radius:10px; display:block;\">\n        <\/a>\n\n        <h2><div class=\"badge\">03<\/div><span>Blood Groups and Rh Factor<\/span><\/h2>\n        <p>Human blood grouping is primarily based on the ABO and Rh systems. Mastering these compatibility rules is non-negotiable for any <strong>body fluids and circulation class 11 pdf<\/strong> study session.<\/p>\n\n        <div class=\"card-grid\">\n            <div class=\"card\">\n                <span class=\"card-title\">UNIVERSAL DONOR<\/span>\n                Group O (specifically O negative) can donate to any individual because it lacks A and B antigens.\n            <\/div>\n            <div class=\"card\">\n                <span class=\"card-title\">UNIVERSAL RECIPIENT<\/span>\n                Group AB (specifically AB positive) can receive any blood type as it lacks anti-A and anti-B antibodies.\n            <\/div>\n        <\/div>\n\n        <div class=\"callout warning\">\n            <div class=\"callout-pill\">WARN<\/div>\n            <strong>Erythroblastosis Fetalis:<\/strong> Occurs when an Rh negative mother carries an Rh positive fetus for the second time. The mother&#8217;s anti-Rh antibodies destroy fetal RBCs, leading to severe anemia or death.\n        <\/div>\n\n        <h2><div class=\"badge\">04<\/div><span>Coagulation of Blood: The Cascade Mechanism<\/span><\/h2>\n        <p>Blood clotting is a protective mechanism that prevents excessive loss of blood from the body. It involves a complex &#8220;Cascade&#8221; of enzymatic reactions catalyzed by factors present in the plasma in an inactive state.<\/p>\n\n        <div class=\"formula-orange\">\n            <span class=\"formula-orange-label\">CLOTTING PATHWAY<\/span>\n            <div class=\"formula-orange-content\">\n                Injury &rarr; Thromboplastin release &rarr; Prothrombin &rarr; (Thrombokinase) &rarr; Thrombin <br>\n                Fibrinogen &rarr; (Thrombin) &rarr; Fibrin Threads (Clot)\n            <\/div>\n            <p style=\"font-size: 0.85rem; margin-top: 5px;\">(Calcium ions [Ca<sup>2+<\/sup>] play a crucial role in all steps of the cascade.)<\/p>\n        <\/div>\n\n        <h2><div class=\"badge\">05<\/div><span>Lymph (Tissue Fluid): The Middleman<\/span><\/h2>\n        <p>As blood passes through the capillaries in tissues, some water and small water-soluble substances move out into the spaces between cells. This fluid is known as interstitial fluid or tissue fluid. When this fluid enters the lymphatic vessels, it is called Lymph.<\/p>\n        \n        <ul>\n            <li><strong>Composition:<\/strong> Similar to plasma but with fewer proteins and no RBCs.<\/li>\n            <li><strong>Functions:<\/strong> Returns lost fluid to blood, carries lymphocytes for immunity, and absorbs fats in the **lacteals** of intestinal villi.<\/li>\n        <\/ul>\n\n        <h2><div class=\"badge\">06<\/div><span>Human Circulatory System: Heart Anatomy<\/span><\/h2>\n        <p>The human heart is a muscular organ located in the thoracic cavity. It is protected by a double-walled membranous bag called the <strong>Pericardium<\/strong>. For your <strong>body fluids and circulation class 11 pdf<\/strong> revision, focus on the valve locations.<\/p>\n\n        <div class=\"table-container\">\n            <table>\n                <thead>\n                    <tr>\n                        <th>Valve Name<\/th>\n                        <th>Location<\/th>\n                        <th>Function<\/th>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td>Tricuspid Valve<\/td>\n                        <td>Between Right Atrium and Right Ventricle<\/td>\n                        <td>Prevents backflow to Right Atrium.<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Bicuspid (Mitral)<\/td>\n                        <td>Between Left Atrium and Left Ventricle<\/td>\n                        <td>Prevents backflow to Left Atrium.<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>Semilunar Valves<\/td>\n                        <td>Opening of Pulmonary Artery and Aorta<\/td>\n                        <td>Prevents backflow into the Ventricles.<\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n        <\/div>\n\n        <div class=\"formula-dark\">\n            <span class=\"formula-dark-label\">CONDUCTION PATHWAY<\/span>\n            <div class=\"formula-dark-content\">SA Node &rarr; AV Node &rarr; Bundle of His &rarr; Purkinje Fibers<\/div>\n        <\/div>\n\n        <!-- Promotional Banner 2 -->\n        <a href=\"https:\/\/ksquareinstitute.in\/neet-2026-rank-predictor\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" style=\"display:block; margin-bottom:40px;\">\n          <img decoding=\"async\" src=\"https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/03\/neet-2026-college-and-rank-predictor-scaled.png\" alt=\"NEET 2026 Rank Predictor - KSquare Career Institute\" style=\"width:100%; height:auto; border-radius:10px; display:block;\">\n        <\/a>\n\n        <h2><div class=\"badge\">07<\/div><span>The Cardiac Cycle and ECG<\/span><\/h2>\n        <p>The sequence of events occurring from the beginning of one heartbeat to the beginning of the next is the Cardiac Cycle. It lasts approximately 0.8 seconds. A standard ECG trace allows doctors to visualize these electrical events.<\/p>\n\n        <div class=\"card-grid\">\n            <div class=\"card\">\n                <span class=\"card-title\">P WAVE<\/span>\n                Represents atrial depolarization (contraction of both atria).\n            <\/div>\n            <div class=\"card\">\n                <span class=\"card-title\">QRS COMPLEX<\/span>\n                Represents ventricular depolarization (onset of ventricular contraction).\n            <\/div>\n            <div class=\"card\">\n                <span class=\"card-title\">T WAVE<\/span>\n                Represents ventricular repolarization (return to relaxed state).\n            <\/div>\n            <div class=\"card\">\n                <span class=\"card-title\">STROKE VOLUME<\/span>\n                Volume of blood pumped out by each ventricle per beat (~70 mL).\n            <\/div>\n        <\/div>\n\n        <h2><div class=\"badge\">08<\/div><span>Double Circulation and Blood Vessels<\/span><\/h2>\n        <p>In humans, blood flows through the heart twice for every complete cycle of the body. This is called Double Circulation. This section of the <strong>body fluids and circulation class 11 pdf<\/strong> highlights the separation of oxygenated and deoxygenated blood.<\/p>\n        \n        <ul>\n            <li><strong>Pulmonary Circulation:<\/strong> Right Ventricle &rarr; Lungs &rarr; Left Atrium.<\/li>\n            <li><strong>Systemic Circulation:<\/strong> Left Ventricle &rarr; Body Organs &rarr; Right Atrium.<\/li>\n            <li><strong>Hepatic Portal System:<\/strong> A unique vascular connection between the digestive tract and liver.<\/li>\n            <li><strong>Coronary System:<\/strong> Dedicated blood supply for the cardiac musculature itself.<\/li>\n        <\/ul>\n\n        <div class=\"internal-links\">\n            <span class=\"internal-links-title\">ENHANCE YOUR NEET PREPARATION<\/span>\n            <a href=\"https:\/\/ksquareinstitute.in\/blog\/neet-physics-survival-kit-2026\/\">NEET Physics Survival Kit 2026<\/a>\n            <a href=\"https:\/\/ksquareinstitute.in\/blog\/organic-chemistry-strategy-neet\/\">Organic Chemistry Strategy for NEET<\/a>\n            <a href=\"https:\/\/ksquareinstitute.in\/blog\/neet-biology-tricks-for-exams\/\">Biology Mnemonics &#038; Tricks<\/a>\n            <a href=\"https:\/\/ksquareinstitute.in\/blog\/score-340-in-neet-biology\/\">How to Score 340 in NEET Biology<\/a>\n            <a href=\"https:\/\/ksquareinstitute.in\/blog\/top-10-tricky-neet-biology-diagrams\/\">Top 10 Tricky Biology Diagrams<\/a>\n            <a href=\"https:\/\/ksquareinstitute.in\/free-study-material\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Free NEET Study Material<\/a>\n        <\/div>\n\n        <div class=\"revision-box\">\n            <h3>Quick Revision Summary<\/h3>\n            <ul>\n                <li><strong>ABO System:<\/strong> Antigens on RBC surface; Antibodies in plasma.<\/li>\n                <li><strong>SA Node:<\/strong> Known as the Pacemaker; generates impulses at 70-75\/min.<\/li>\n                <li><strong>Heart Sound &#8216;LUB&#8217;:<\/strong> Closure of tricuspid and bicuspid valves.<\/li>\n                <li><strong>Heart Sound &#8216;DUB&#8217;:<\/strong> Closure of semilunar valves.<\/li>\n                <li><strong>Cardiac Output:<\/strong> Heart Rate x Stroke Volume (~5000 mL\/min).<\/li>\n                <li><strong>Arteries:<\/strong> Thick walls, no valves; carry blood away from heart.<\/li>\n                <li><strong>Veins:<\/strong> Thin walls, valves present; carry blood toward heart.<\/li>\n                <li><strong>Hypertension:<\/strong> Persistent high BP (140\/90 or higher).<\/li>\n                <li><strong>Angina Pectoris:<\/strong> Chest pain due to insufficient O<sub>2<\/sub> to heart muscle.<\/li>\n                <li><strong>ECG Diagnosis:<\/strong> Deviation in wave shape indicates heart abnormality.<\/li>\n            <\/ul>\n            <a href=\"#\" class=\"download-btn\" rel=\"nofollow noopener noreferrer\">\n                <span>Download Circulation Notes (PDF)<\/span>\n            <\/a>\n        <\/div>\n\n        <h2><div class=\"badge\">09<\/div><span>Frequently Asked Questions<\/span><\/h2>\n        <div class=\"faq-container\">\n            <details>\n                <summary>\n                    <span>What is the difference between serum and plasma?<\/span>\n                    <div class=\"toggle-icon\">\n                        <svg viewBox=\"0 0 24 24\"><path class=\"plus-path\" d=\"M12 5v14M5 12h14\"\/><path class=\"minus-path\" d=\"M5 12h14\"\/><\/svg>\n                    <\/div>\n                <\/summary>\n                <div class=\"faq-answer\">Plasma is the straw-colored fluid part of the blood containing all proteins and clotting factors. Serum is plasma without the clotting factors (Plasma &minus; Clotting factors = Serum).<\/div>\n            <\/details>\n            <details>\n                <summary>\n                    <span>Why is the SA node called the pacemaker of the heart?<\/span>\n                    <div class=\"toggle-icon\">\n                        <svg viewBox=\"0 0 24 24\"><path class=\"plus-path\" d=\"M12 5v14M5 12h14\"\/><path class=\"minus-path\" d=\"M5 12h14\"\/><\/svg>\n                    <\/div>\n                <\/summary>\n                <div class=\"faq-answer\">The Sino-atrial (SA) node is a specialized mass of nodal tissue in the right atrium. It has the highest rate of auto-excitability and initiates the electrical impulse that sets the rhythm for the entire heart, typically 70-75 beats per minute.<\/div>\n            <\/details>\n            <details>\n                <summary>\n                    <span>Explain the significance of the Hepatic Portal System.<\/span>\n                    <div class=\"toggle-icon\">\n                        <svg viewBox=\"0 0 24 24\"><path class=\"plus-path\" d=\"M12 5v14M5 12h14\"\/><path class=\"minus-path\" d=\"M5 12h14\"\/><\/svg>\n                    <\/div>\n                <\/summary>\n                <div class=\"faq-answer\">The hepatic portal vein carries blood from the intestine to the liver before it reaches the systemic circulation. This allows the liver to process, detoxify, and store nutrients absorbed from food before they are distributed to the rest of the body.<\/div>\n            <\/details>\n            <details>\n                <summary>\n                    <span>What causes the heart sounds heard through a stethoscope?<\/span>\n                    <div class=\"toggle-icon\">\n                        <svg viewBox=\"0 0 24 24\"><path class=\"plus-path\" d=\"M12 5v14M5 12h14\"\/><path class=\"minus-path\" d=\"M5 12h14\"\/><\/svg>\n                    <\/div>\n                <\/summary>\n                <div class=\"faq-answer\">Heart sounds are caused by the closure of heart valves. The first sound &#8216;LUB&#8217; is associated with the closure of AV valves (tricuspid\/bicuspid) at the start of ventricular systole. The second sound &#8216;DUB&#8217; is due to the closure of semilunar valves at the start of ventricular diastole.<\/div>\n            <\/details>\n            <details>\n                <summary>\n                    <span>What is Atherosclerosis (Coronary Artery Disease)?<\/span>\n                    <div class=\"toggle-icon\">\n                        <svg viewBox=\"0 0 24 24\"><path class=\"plus-path\" d=\"M12 5v14M5 12h14\"\/><path class=\"minus-path\" d=\"M5 12h14\"\/><\/svg>\n                    <\/div>\n                <\/summary>\n                <div class=\"faq-answer\">It is a disorder caused by the deposition of calcium, fats, cholesterol, and fibrous tissue in the arteries that supply blood to the heart muscle. This makes the lumen of the arteries narrower, restricting blood flow and potentially leading to a heart attack.<\/div>\n            <\/details>\n            <details>\n                <summary>\n                    <span>How does the Autonomic Nervous System regulate the heart?<\/span>\n                    <div class=\"toggle-icon\">\n                        <svg viewBox=\"0 0 24 24\"><path class=\"plus-path\" d=\"M12 5v14M5 12h14\"\/><path class=\"minus-path\" d=\"M5 12h14\"\/><\/svg>\n                    <\/div>\n                <\/summary>\n                <div class=\"faq-answer\">The medulla oblongata controls heart rate through the ANS. Sympathetic nerves increase heart rate and strength of contraction (increasing cardiac output). Parasympathetic nerves (vagus nerve) decrease the heart rate and speed of conduction.<\/div>\n            <\/details>\n        <\/div>\n\n        <div class=\"cta-section\">\n            <h2>Circulate Your Success with KSquare<\/h2>\n            <p>Mastering the <strong>body fluids and circulation class 11 pdf<\/strong> content is a vital milestone for your medical college entrance success. Join KSquare Institute&#8217;s Mission 180 Rankers Batch for expert-led modules, high-yield practice sessions, and 24\/7 doubt resolution to secure your seat.<\/p>\n            <div class=\"cta-buttons\">\n                <a href=\"https:\/\/courses.ksquare.co.in\/new-courses\/3-mission-180-neet-physics-rankers-batch\" class=\"btn btn-white\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Join Rankers Batch<\/a>\n                <a href=\"https:\/\/ksquareinstitute.in\/free-study-material\/\" class=\"btn btn-outline\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Get Free Study Material<\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<\/body>\n<\/html>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"UTF-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n  <title>Table of Contents \u2014 Biology Class 11<\/title>\n  \n  <!-- Google Fonts Import -->\n  <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n  <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n  <link href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&#038;family=Plus+Jakarta+Sans:ital,wght@0,200..800;1,200..800&#038;display=swap\" rel=\"stylesheet\">\n  \n  <style>\n    \/* Scoped wrapper using a unique ID (#biology-toc-wrapper).\n       Ensures zero CSS leakage and full width edge-to-edge layout.\n    *\/\n    #biology-toc-wrapper {\n      font-family: 'DM Sans', sans-serif;\n      width: 100%;\n      margin: 0;\n      padding: 60px 0;\n      color: #111;\n      background: #fff;\n      -webkit-font-smoothing: antialiased;\n    }\n\n    #biology-toc-wrapper .container-inner {\n      width: 100%;\n      margin: 0 auto;\n      padding: 0; \n    }\n\n    #biology-toc-wrapper h1 {\n      font-family: 'Plus Jakarta Sans', sans-serif;\n      font-size: 0.85rem;\n      font-weight: 700;\n      color: #71717a;\n      margin: 0 0 8px;\n      letter-spacing: 0.1em;\n      text-transform: uppercase;\n      padding-left: 16px; \n    }\n\n    #biology-toc-wrapper h2 {\n      font-family: 'Plus Jakarta Sans', sans-serif;\n      font-size: 2.25rem;\n      font-weight: 800;\n      margin: 0 0 48px;\n      letter-spacing: -0.02em;\n      color: #09090b;\n      padding-left: 16px;\n    }\n\n    #biology-toc-wrapper table {\n      width: 100%;\n      border-collapse: collapse;\n      border-spacing: 0;\n      border-top: 1px solid #e4e4e7;\n      border-bottom: 1px solid #e4e4e7;\n    }\n\n    #biology-toc-wrapper tr {\n      border-bottom: 1px solid #e4e4e7;\n      transition: all 0.2s ease;\n    }\n\n    #biology-toc-wrapper tr:hover {\n      background-color: #f8fafc;\n    }\n\n    #biology-toc-wrapper tr:last-child {\n      border-bottom: none;\n    }\n\n    #biology-toc-wrapper td {\n      padding: 24px 16px;\n      vertical-align: middle;\n      font-size: 1.05rem;\n      font-weight: 500;\n      border-right: 1px solid #e4e4e7;\n    }\n\n    #biology-toc-wrapper td:last-child {\n      border-right: none;\n    }\n\n    \/* Column 1: Index Numbers *\/\n    #biology-toc-wrapper td:first-child {\n      color: #a1a1aa;\n      font-size: 0.9rem;\n      width: 70px;\n      font-weight: 400;\n      font-variant-numeric: tabular-nums;\n      text-align: center;\n      padding-left: 10px;\n    }\n\n    \/* Column 2: Chapter Titles *\/\n    #biology-toc-wrapper td:nth-child(2) {\n      padding-left: 32px; \n      color: #18181b;\n    }\n\n    \/* Column 3: Action Button *\/\n    #biology-toc-wrapper td:last-child {\n      text-align: right;\n      width: 180px;\n      padding-right: 24px; \n    }\n\n    \/* Premium Button Styling *\/\n    #biology-toc-wrapper a.go {\n      display: inline-block;\n      font-family: 'Plus Jakarta Sans', sans-serif;\n      font-size: 0.75rem;\n      font-weight: 800;\n      padding: 12px 24px;\n      border: 1.5px solid #18181b;\n      border-radius: 8px;\n      color: #18181b;\n      text-decoration: none;\n      letter-spacing: 0.05em;\n      text-transform: uppercase;\n      transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);\n      white-space: nowrap;\n    }\n\n    #biology-toc-wrapper a.go:hover {\n      background: #18181b;\n      color: #ffffff;\n      transform: translateY(-2px);\n      box-shadow: 0 4px 12px rgba(24, 24, 27, 0.15);\n    }\n\n    \/* Responsive adjustments *\/\n    @media (max-width: 768px) {\n      #biology-toc-wrapper h2 {\n        font-size: 1.75rem;\n        margin-bottom: 32px;\n        padding-left: 12px;\n      }\n      #biology-toc-wrapper td {\n        padding: 18px 12px;\n        font-size: 0.95rem;\n      }\n      #biology-toc-wrapper td:nth-child(2) {\n        padding-left: 16px;\n      }\n    }\n  <\/style>\n<\/head>\n<body>\n\n<div id=\"biology-toc-wrapper\">\n  <div class=\"container-inner\">\n    <h1>Table of Contents<\/h1>\n    <h2>Biology &mdash; Class 11<\/h2>\n    \n    <table>\n      <tr><td>01<\/td><td>The Living World<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/the-living-world-class-11-biology-notes\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>02<\/td><td>Biological Classification<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/biological-classification-class-11-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>03<\/td><td>Plant Kingdom<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/plant-kingdom-class-11-notes-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>04<\/td><td>Animal Kingdom<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/animal-kingdom-class-11-notes-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>05<\/td><td>Morphology of Flowering Plants<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/morphology-of-flowering-plants-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>06<\/td><td>Anatomy of Flowering Plants<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/anatomy-of-flowering-plants-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>07<\/td><td>Structural Organisation in Animals<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/structural-organisation-in-animals-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>08<\/td><td>Cell: The Unit of Life<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/cell-the-unit-of-life-class-11-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>09<\/td><td>Biomolecules<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/biomolecules-class-11-biology-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>10<\/td><td>Cell Cycle and Cell Division<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/cell-cycle-and-division-class-11-notes\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>11<\/td><td>Photosynthesis in Higher Plants<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/photosynthesis-in-higher-plants-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>12<\/td><td>Respiration in Plants<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/respiration-in-plants-class-11-notes-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>13<\/td><td>Plant Growth and Development<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/plant-growth-and-development-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>14<\/td><td>Breathing and Exchange of Gases<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/breathing-and-exchange-of-gases-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>15<\/td><td>Body Fluids and Circulation<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/body-fluids-and-circulation-class-11-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>16<\/td><td>Excretory Products and their Elimination<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/excretory-products-and-elimination-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>17<\/td><td>Locomotion and Movement<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/locomotion-and-movement-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>18<\/td><td>Neural Control and Coordination<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/neural-control-and-coordination-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>19<\/td><td>Chemical Coordination and Integration<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/chemical-coordination-and-integration-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n    <\/table>\n  <\/div>\n<\/div>\n\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>01 Introduction to Body Fluids and Circulation Mastering the concepts of body fluids and circulation class 11 pdf is essential for every medical aspirant. For complex organisms to survive, every cell needs a constant supply of nutrients and oxygen, alongside an efficient system to remove metabolic wastes like CO2. Humans utilize a sophisticated fluid-based transport [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[127],"tags":[453,455,456,389,454],"class_list":["post-4077","post","type-post","status-publish","format-standard","hentry","category-free-study-material","tag-body-fluids-and-circulation-class-11","tag-body-fluids-circulation-pdf","tag-cbse-class-11-biology","tag-class-11-biology-notes","tag-neet-biology-notes"],"blocksy_meta":{"page_structure_type":"type-1","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4077","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/comments?post=4077"}],"version-history":[{"count":2,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4077\/revisions"}],"predecessor-version":[{"id":4267,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4077\/revisions\/4267"}],"wp:attachment":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media?parent=4077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/categories?post=4077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/tags?post=4077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}