Blood And Its Components And Functions Pdf
File Name: blood and its components and functions .zip
- Service Unavailable in EU region
- 1. Composition of Blood and its Functions
- Blood function and composition
- Blood and Blood Components: From Similarities to Differences
Service Unavailable in EU region
See also Overview of Blood. Plasma is the liquid component of blood, in which the red blood cells, white blood cells, and platelets are suspended. It constitutes more than half of the blood's volume and consists mostly of water that contains dissolved salts electrolytes and proteins. The major protein in plasma is albumin. Albumin helps keep fluid from leaking out of blood vessels and into tissues, and albumin binds to and carries substances such as hormones and certain drugs. Other proteins in plasma include antibodies immunoglobulins , which actively defend the body against viruses, bacteria, fungi, and cancer cells, and clotting factors , which control bleeding. Plasma has other functions.
The albumin contained in plasma prevents the blood from losing too much water and consistency as it travels through the narrow, water-permeable blood vessels capillaries. Albumin transports various blood components and nutrients. The immunoglobulins also contained in plasma are antibodies that, along with white blood cells, play an important role in fighting against pathogens. Clotting factors, in combination with platelets, control hemorrhaging. A deficiency in these proteins can cause various health problems.
1. Composition of Blood and its Functions
Find GPs in Australia. The formed elements are so named because they are enclosed in a plasma membrane and have a definite structure and shape. All formed elements are cells except for the platelets, which are tiny fragments of bone marrow cells. Leukocytes are further classified into two subcategories called granulocytes which consist of neutrophils, eosinophils and basophils; and agranulocytes which consist of lymphocytes and monocytes. The formed elements can be separated from plasma by centrifuge, where a blood sample is spun for a few minutes in a tube to separate its components according to their densities. This volume is known as the haematocrit. WBCs and platelets form a narrow cream-coloured coat known as the buffy coat immediately above the RBCs.
Blood transfusion is made possible because, in most countries and organizations, altruistic individuals voluntarily, anonymously, and generously donate without compensation either whole blood or separated components that are then processed and distributed by professionals, prior to being allocated to recipients in need. Being part of modern medicine, blood transfusion uses so-called standard blood components when relative to cellular fractions and fresh plasma. However, as will be discussed in this paper, strictly speaking, such so-called labile blood components are not completely standard. Finally, country organizations also vary due to the economy, sociology, politics, and epidemiology. This paper then, discusses the particulars of which ethical considerations of blood transfusion diversity and the consequences for donors, patients, and society. Blood and blood components BCs for transfusion chiefly originate from donations made by altruistic individuals.
Blood , fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products. Technically, blood is a transport liquid pumped by the heart or an equivalent structure to all parts of the body, after which it is returned to the heart to repeat the process. Blood is both a tissue and a fluid. It is a tissue because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix plasma , which makes the blood a fluid. If blood flow ceases, death will occur within minutes because of the effects of an unfavourable environment on highly susceptible cells. The constancy of the composition of the blood is made possible by the circulation , which conveys blood through the organs that regulate the concentrations of its components.
Components of the Cardiovascular System mesenchyme cells, and its structure, which contains the intercellular matrix known as the plasma. Plasma proteins may have specialized functions, but they also contribute.
Blood function and composition
Blood is a connective tissue that helps in the transportation of substances, protects against diseases and regulates the temperature of the body. Do you know why the colour of blood is red? It is red in colour due to a red pigment called haemoglobin present in its red cells. Plasma is a liquid also known as the fluid matrix and consists of three types of cells that keep floating in it namely red blood cells, white blood cells, and platelets.
A blood cell , also called a hematopoietic cell , hemocyte , or hematocyte , is a cell produced through hematopoiesis and found mainly in the blood. Major types of blood cells include red blood cells erythrocytes , white blood cells leukocytes , and platelets thrombocytes. Red blood cells or erythrocytes , primarily carry oxygen and collect carbon dioxide through the use of hemoglobin. Red blood cells are circular, biconcave, disk-shaped and deformable to allow them to squeeze through narrow capillaries.
Blood is a suspension of blood elements erythrocytes, leukocytes, and platelets in blood plasma. Blood elements can be separated from blood plasma using centrifugal force. Figure shows that the most descended are erythrocytes — the volume of erythrocytes in a sample of blood is called the hematocrit.
Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including:.
Blood and Blood Components: From Similarities to Differences
Неужели так. - Утечка информации! - кричал кто-то. - Стремительная. Все люди на подиуме потянулись к терминалу в одно и то же мгновение, образовав единое сплетение вытянутых рук.
У испанцев всегда было иное представление о плотности, чем у остального мира. Беккер оказался зажат между двумя полными женщинами с закрытыми глазами, предоставившими толпе нести их в собор. Они беззвучно молились, перебирая пальцами четки.
It has four main components: plasma, red blood cells, white blood cells, and platelets. An average-sized man has about 12 pints of blood in his body, and an T lymphocytes help regulate the function of other immune cells and directly.
Test your knowledge
Единственное, что он понял из его сбивчивого рассказа, - это что перед смертью Танкадо отдал кольцо. - Танкадо отдал кольцо? - скептически отозвалась Сьюзан. - Да. Такое впечатление, что он его буквально всучил - канадцу показалось, будто бы он просил, чтобы кольцо взяли. Похоже, этот канадец рассмотрел его довольно внимательно.
Я был уверен, что он тебе все рассказал. Сьюзан ощутила угрызения совести. - Я тоже хватила через край. Извините. Дэвид - это отличная кандидатура. Стратмор отрешенно кивнул: - Он вернется сегодня вечером. Сьюзан представила себе, что пришлось пережить коммандеру, - весь этот груз бесконечного ожидания, бесконечные часы, бесконечные встречи.