descibe about function of blood
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Hi frnd,
Blood has three main functions: transport, protection and regulation. Blood transports the following substances: Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the body. Nutrients from the digestive tract and storage sites to the rest of the body.
Blood has three main functions: transport, protection and regulation. Blood transports the following substances: Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the body. Nutrients from the digestive tract and storage sites to the rest of the body.
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Blood has three main functions: transport, protection and regulation.
Transport
Blood transports the following substances:
Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the bodyNutrients from the digestive tract and storage sites to the rest of the bodyWaste products to be detoxified or removed by the liver and kidneysHormones from the glands in which they are produced to their target cellsHeat to the skin so as to help regulate body temperature
Protection
Blood has several roles in inflammation:
Leukocytes, or white blood cells, destroy invading microorganisms and cancer cellsAntibodies and other proteins destroy pathogenic substancesPlatelet factors initiate blood clotting and help minimise blood loss
Regulation
Blood helps regulate:
pH by interacting with acids and basesWater balance by transferring water to and from tissuesComposition of blood
Blood is classified as a connective tissue and consists of two main components:
Plasma, which is a clear extracellular fluidFormed elements, which are made up of the blood cells and plateletsThe 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.
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