{"id":665563,"date":"2023-07-26T14:35:58","date_gmt":"2023-07-26T09:05:58","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=665563"},"modified":"2025-05-16T10:25:33","modified_gmt":"2025-05-16T04:55:33","slug":"blood-3","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/articles\/blood\/","title":{"rendered":"Blood"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Functions_of_blood\" title=\"Functions of blood\">Functions of blood<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Physical_Characteristics\" title=\"Physical Characteristics\">Physical Characteristics<\/a><ul class='ez-toc-list-level-4'><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Blood_Volume_and_Composition\" title=\"Blood Volume and Composition\">Blood Volume and Composition<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Blood_Plasma\" title=\"Blood Plasma\">Blood Plasma<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Formation_of_Blood_Cells\" title=\"Formation of Blood Cells\">Formation of Blood Cells<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Red_Blood_Cells_Erythrocytes\" title=\"Red Blood Cells (Erythrocytes)\">Red Blood Cells (Erythrocytes)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#White_Blood_Cells_Leukocytes\" title=\"White Blood Cells (Leukocytes)\">White Blood Cells (Leukocytes)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Platelets\" title=\"Platelets\">Platelets<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#ABO_blood_group_system\" title=\"ABO blood group system\">ABO blood group system<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Rh_blood_group_system\" title=\"Rh blood group system\">Rh blood group system<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Summary\" title=\"Summary\">Summary<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#Frequently_Asked_Questions_on_Blood\" title=\"Frequently Asked Questions on Blood\">Frequently Asked Questions on Blood<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#What_is_the_primary_function_of_blood\" title=\"What is the primary function of blood? \">What is the primary function of blood? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#What_is_the_composition_of_blood\" title=\"What is the composition of blood? \">What is the composition of blood? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#What_are_red_blood_cells_and_their_function\" title=\"What are red blood cells and their function? \">What are red blood cells and their function? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#What_are_white_blood_cells_and_how_do_they_protect_us\" title=\"What are white blood cells and how do they protect us? \">What are white blood cells and how do they protect us? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#What_are_platelets_and_their_role_in_blood_clotting\" title=\"What are platelets and their role in blood clotting? \">What are platelets and their role in blood clotting? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#How_is_blood_formed_in_the_body\" title=\"How is blood formed in the body? \">How is blood formed in the body? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#How_long_do_red_blood_cells_live\" title=\"How long do red blood cells live? \">How long do red blood cells live? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#What_is_the_role_of_blood_plasma\" title=\"What is the role of blood plasma? \">What is the role of blood plasma? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/infinitylearn.com\/surge\/articles\/blood\/#How_is_blood_type_determined\" title=\"How is blood type determined? \">How is blood type determined? <\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>Blood plays a multitude of critical roles in the human body. It is a lifeline, transporting essential elements and hormones, regulating various physiological processes, and providing protection against harmful agents.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Functions_of_blood\"><\/span>Functions of blood<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>Transporting Substances<\/strong><\/li>\n<\/ul>\n<p>Oxygen, carbon dioxide, nutrients, waste products, and hormones are all shuttled through the bloodstream to various tissues and organs.<\/p>\n<ul>\n<li><strong>Regulation of Internal Environment<\/strong><\/li>\n<\/ul>\n<p>Blood plays a pivotal role in maintaining the body&#8217;s internal environment. It helps regulate the pH levels, body temperature, and water content of cells. Through its efficient distribution and circulation, blood aids in balancing the body&#8217;s overall <strong>homeostasis<\/strong>.<\/p>\n<ul>\n<li><strong>Protection<\/strong><\/li>\n<\/ul>\n<p>Blood offers a robust defense mechanism to protect the body from harm. It achieves this through clotting, which prevents excessive blood loss from injuries. Additionally, certain phagocytic white blood cells and specialized blood plasma proteins combat toxins and microbes, safeguarding the body from infections.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Physical_Characteristics\"><\/span>Physical Characteristics<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Blood has a viscosity greater than that of water, which allows it to flow smoothly through blood vessels. The average temperature of the blood is approximately 38\u00b0C (100.4\u00b0F), contributing to maintaining body temperature within an optimal range. Moreover, blood maintains a pH level between 7.35 and 7.45, a crucial factor for physiological balance.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Blood_Volume_and_Composition\"><\/span>Blood Volume and Composition<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Blood constitutes about 8% of body weight, with an average volume of 4 to 6 liters in adults. It is composed of approximately 55% blood plasma, a liquid component containing water and various solutes. The remaining 45% consists of formed elements, which include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Blood_Plasma\"><\/span>Blood Plasma<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Blood plasma, the liquid component of blood, primarily contains 91.5% water and 8.5% solutes. These solutes include proteins such as albumins, globulins, fibrinogen, nutrients, vitamins, hormones, respiratory gases, electrolytes, and waste products. The dynamic composition of blood plasma plays a vital role in various bodily functions.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Formation_of_Blood_Cells\"><\/span>Formation of Blood Cells<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Hemopoiesis, the formation of blood cells, takes place in the red bone marrow. Two types of stem cells contribute to this process: myeloid stem cells, responsible for forming red blood cells, platelets, granulocytes, and monocytes; and lymphoid stem cells, which give rise to lymphocytes.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Red_Blood_Cells_Erythrocytes\"><\/span>Red Blood Cells (Erythrocytes)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>Red blood cells<\/strong>, or erythrocytes, are unique biconcave discs devoid of nuclei, filled with hemoglobin, a protein that carries oxygen and carbon dioxide. RBCs live for about 120 days, and their formation, erythropoiesis, occurs in adult red bone marrow. Erythropoietin, released by the kidneys in response to hypoxia, stimulates erythropoiesis. A reticulocyte count is a diagnostic test that indicates the rate of erythropoiesis.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"White_Blood_Cells_Leukocytes\"><\/span>White Blood Cells (Leukocytes)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>White blood cells, or leukocytes, are nucleated cells with two principal types: granulocytes (neutrophils, eosinophils, and basophils) and agranulocytes (lymphocytes and monocytes). WBCs combat inflammation and infection, with neutrophils and macrophages performing phagocytosis. Eosinophils, basophils, B lymphocytes, and T lymphocytes play specific roles in immunity and immune response.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Platelets\"><\/span>Platelets<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h4><span class=\"ez-toc-section\" id=\"ABO_blood_group_system\"><\/span>ABO blood group system<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>The ABO blood group system is determined by the presence or absence of A and B antigens on the surface of red blood cells (RBCs). Blood types are classified as A, B, AB, or O, depending on the antigens present.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Rh_blood_group_system\"><\/span>Rh blood group system<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>The Rh blood group system depends on the presence or absence of Rh antigens on RBCs. Individuals with Rh antigens are classified as Rh+, while those without are Rh-.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Summary\"><\/span>Summary<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Blood is a vital fluid that performs crucial functions in the body. It transports oxygen, nutrients, hormones, and waste products while regulating pH, body temperature, and water content. Blood provides protection through clotting and combatting toxins and microbes. It consists of blood plasma and formed elements, including red and white blood cells, and platelets. Red blood cells carry oxygen, while white blood cells fight infections. Blood plays a critical role in maintaining overall health.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_on_Blood\"><\/span>Frequently Asked Questions on Blood<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_primary_function_of_blood\"><\/span>What is the primary function of blood? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tBlood has multiple functions, including the transport of oxygen, nutrients, waste products, hormones, and carbon dioxide. It also helps regulate the body's pH, temperature, and water content, and provides protection through clotting and combating toxins and microbes. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_composition_of_blood\"><\/span>What is the composition of blood? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tBlood is approximately 55% blood plasma and 45% formed elements. Blood plasma contains water and various solutes like proteins, nutrients, hormones, and waste products. Formed elements include red blood cells, white blood cells, and platelets. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_are_red_blood_cells_and_their_function\"><\/span>What are red blood cells and their function? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tRed blood cells, or erythrocytes, are biconcave discs containing hemoglobin. Hemoglobin allows them to transport oxygen and carbon dioxide throughout the body. Their primary function is oxygen delivery to tissues and carbon dioxide removal. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_are_white_blood_cells_and_how_do_they_protect_us\"><\/span>What are white blood cells and how do they protect us? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tWhite blood cells, or leukocytes, are nucleated cells divided into granulocytes (neutrophils, eosinophils, basophils) and agranulocytes (lymphocytes, monocytes). They protect us by combating inflammation and infection. Neutrophils and macrophages perform phagocytosis, while lymphocytes produce antibodies and directly destroy invaders. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_are_platelets_and_their_role_in_blood_clotting\"><\/span>What are platelets and their role in blood clotting? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tPlatelets are cell fragments derived from megakaryocytes. They play a vital role in stopping blood loss from damaged blood vessels by forming a platelet plug. This initiates the blood clotting process, preventing excessive bleeding. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"How_is_blood_formed_in_the_body\"><\/span>How is blood formed in the body? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tBlood cells are formed through hemopoiesis, which occurs in the red bone marrow. Myeloid stem cells give rise to RBCs, platelets, granulocytes, and monocytes, while lymphoid stem cells develop into lymphocytes. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"How_long_do_red_blood_cells_live\"><\/span>How long do red blood cells live? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tRed blood cells have an average lifespan of about 120 days. After their phagocytosis by macrophages, hemoglobin is recycled, and new RBCs are constantly produced through erythropoiesis. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_role_of_blood_plasma\"><\/span>What is the role of blood plasma? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tBlood plasma is the liquid component of blood, mainly composed of water and solutes. These solutes include proteins, nutrients, vitamins, hormones, respiratory gases, electrolytes, and waste products. It serves as a medium for transporting essential substances throughout the body. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"How_is_blood_type_determined\"><\/span>How is blood type determined? <span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tBlood type is determined by the presence or absence of specific antigens on the surface of red blood cells. The ABO blood group system classifies blood into different types, while the Rh system determines whether an individual is Rh+ or Rh-. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the primary function of blood? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Blood has multiple functions, including the transport of oxygen, nutrients, waste products, hormones, and carbon dioxide. It also helps regulate the body's pH, temperature, and water content, and provides protection through clotting and combating toxins and microbes.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the composition of blood? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Blood is approximately 55% blood plasma and 45% formed elements. Blood plasma contains water and various solutes like proteins, nutrients, hormones, and waste products. Formed elements include red blood cells, white blood cells, and platelets.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What are red blood cells and their function? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Red blood cells, or erythrocytes, are biconcave discs containing hemoglobin. Hemoglobin allows them to transport oxygen and carbon dioxide throughout the body. Their primary function is oxygen delivery to tissues and carbon dioxide removal.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What are white blood cells and how do they protect us? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"White blood cells, or leukocytes, are nucleated cells divided into granulocytes (neutrophils, eosinophils, basophils) and agranulocytes (lymphocytes, monocytes). They protect us by combating inflammation and infection. Neutrophils and macrophages perform phagocytosis, while lymphocytes produce antibodies and directly destroy invaders.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What are platelets and their role in blood clotting? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Platelets are cell fragments derived from megakaryocytes. They play a vital role in stopping blood loss from damaged blood vessels by forming a platelet plug. This initiates the blood clotting process, preventing excessive bleeding.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How is blood formed in the body? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Blood cells are formed through hemopoiesis, which occurs in the red bone marrow. Myeloid stem cells give rise to RBCs, platelets, granulocytes, and monocytes, while lymphoid stem cells develop into lymphocytes.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How long do red blood cells live? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Red blood cells have an average lifespan of about 120 days. After their phagocytosis by macrophages, hemoglobin is recycled, and new RBCs are constantly produced through erythropoiesis.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the role of blood plasma? \",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Blood plasma is the liquid component of blood, mainly composed of water and solutes. These solutes include proteins, nutrients, vitamins, hormones, respiratory gases, electrolytes, and waste products. 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