Question

descibe about function of blood

Answer 1

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.

Answer 2

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 tissues
Composition 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 platelets

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.