It contains erythrocytes, leucocytes, thrombocytes platelets and plasma. Study of blood and its disease is known as hematology. Aorta is one of the main arteries that arise from the heart and branches further. William harvey 15781657 was discoverer of process of the blood circulation in 1628. Composition of whole blood, functions of formed elements, some disorders, hematopoiesis, hemostasis learn with flashcards, games, and more for free. If youre behind a web filter, please make sure that the domains. Two major functions of the blood include transporting substances to and from our cells and providing immunity and protection against infectious agents such as bacteria and viruses. Explore the composition of blood, types and functions only at byjus. Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells in vertebrates, it is composed of blood cells suspended in blood plasma. Composition, functions, transfusion and blood group blood is a red colour pigment that circulates in the body. Blood helps in the transportation of different substances throughout the body. It is composed of blood cells and an aqueous fluid known as plasma. Its composition and function the blood in our circulatory system is a watery based fluid and consists of two basic components.
It delivers things your body needs like oxygen and nutrients and removes things your body wants to get rid of, like carbon dioxide and other wastes. 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. An average adult person contains 5 to 6 liters of blood in his body. Blood is a fluid connective tissue that consists of plasma, blood cells and platelets. The endothelial glycocalyx is a network of membranebound proteoglycans and glycoproteins, covering the endothelium luminally. These blood vessels carry oxygenrich blood from the heart to all the tissues of the body. Youll also learn about the composition of plasma and why donation sites collect plasma in addition to whole blood. Blood elements can be separated from blood plasma using centrifugal force. Plasma proteins are a diverse group of large and small pro teins that perform numerous functions. Distinguish between elastic arteries, muscular arteries, and arterioles on the basis of structure, location, and function.
This viscosity is vital to the function of blood because if blood flows too easily or with too much resistance, it can strain the heart and lead to severe cardiovascular problems. Blood is important for regulation of the bodys ph, temperature, osmotic pressure, the circulation of nutrients and removal of waste, the distribution of hormones from endocrine glands, and the elimination of excess heat. Shaped like a cone, the liver is a dark reddishbrown organ that weighs about 3 pounds. In this article, we explain their function, what they are made of. Blood composition and functions flashcards quizlet. Plasma, white blood cells, red blood cells, platelets. Composition of blood and its functions functions of. Both endothelium and plasmaderived soluble molecules integrate into this mesh.
It circulates throughout our body delivering oxygen and nutrients to various cells. Blood cells are the cells which are produced during hematopoiesis and found mainly in the blood. A reaction during which plasma antibodies attach to and lyse red blood cells different from your own. The smallest portion of the blood plasma is made up of an assortment of different solids. It is mostly composed of dissolved proteins, mineral ions, glucose, clotting factors and carbon dioxide. Hence the blood has the task of assuring the exchange of substances. Functions of blood system biologymad alevel biology. The volume percentage of all blood cells in the whole blood is about 45% of adults hematocrit. Structure and function of blood biology for majors ii. There are 2 distinct sources that supply blood to the. Composition, functions and other details with diagram.
Valves in the veins prevent the backflow of blood so the flow is in one correct direction towards the heart. Blood is a specialized connective tissue consisting of living cells, called formed elements, suspended in a nonliving fluid matrix, blood plasma. Identify the primary functions of blood in transportation, defense, and. Arteries do not have valves along their length, veins do. To specifically look at the formed elements of erythrocytes red blood cells. Clotting i when platelets encounter damaged blood vessels, they break open and release chemicals called clotting factors into the. Composition and function of blood karnataka pcs free notes. It appears as a strawcolored fluid and is composed mainly of water, but also carries. Composition of blood plasma blood plasma is the straw colored liquid portion of the blood. Blood is composed of the blood cells which accounts for 45% of the blood tissue by volume, with the remaining 55% of the volume composed of plasma, the liquid portion of the blood. Structure and function of blood vessels anatomy and. This table explains the functions of various blood components. Pdf overview of blood components and their preparation. It transports gases oxygen, carbon dioxide, nitrogen etc.
Figure shows that the most descended are erythrocytes the volume of erythrocytes in a sample of blood is called the hematocrit. Blood is a fluid connective tissue which circulates in the body. The venous blood normally has a lower ph than the arterial blood because of presence of more carbon dioxide. Blood transports digested food materials such as glucose, amino acids and fatty acids to various body parts. Blood is a suspension of blood elements erythrocytes, leukocytes, and platelets in blood plasma. As it circulates throughout the body, blood transports substances essential to life, such as sugars, oxygen, and hormones. If youre seeing this message, it means were having trouble loading external resources on our website. Blood in the arteries is a brighter red than blood in. Objectives characteristics of blood composition of blood. Let us study in detail about the composition and function of blood, its components, blood transfusion. Blood is a specialized fluid in your body that has four main components, each with a different function.
Plasma the plasma is the light yellow liquid portion of the blood and is about 90% water. The liver is located in the upper righthand portion of the abdominal cavity, beneath the diaphragm, and on top of the stomach, right kidney, and intestines. Blood is a liquid connective tissue that contains cellular elements blood cells and fluid matrix plasma. Describe the structure and function of blood in the body.
Plasma, which constitutes 55% of blood fluid, is mostly water 92% by volume, and contains proteins, glucose, mineral ions. The components of blood and their importance youtube. It contains plasma, red blood cells, white blood cells, and platelets. Identify the composition of blood plasma, including its most important solutes and plasma. Bones come in all shapes and sizes and have many roles. Of these, the larger part is plasma, comprising about 55%.
Blood is the most important transport medium in the human body. The whole blood which is a mixture of cells, colloids and crystalloids can be separated into different blood components namely packed red blood cell prbc concentrate, platelet concentrate, fresh. Systemic circulation between the heart and other organs. Blood, fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products. Compare and contrast the three tunics that make up the walls of most blood vessels. Blood is a mobile connective tissue composed of a fluid, the plasma and the cells, the blood corpuscles. Blood, fluid that transports oxygen and nutrients to cells and carries away carbon dioxide and other waste products. Bones are more than just the scaffolding that holds the body together. As it moves around the body it aids interchange between the fluid compartments, dissipates heat and distributes hormones, thus helping to. Protection of inner lining of blood vessels due to adhesive property and initiates the process of blood clotting are the main functions of thrombocytes.
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