1.

List the three kinds of blood vessels of human circulatory system and write  their functions in tabular form.

Answer»

Three types of blood vessels in human circulatory system are: Arteries, Veins and Capillaries. Their functions are tabulated below:

ArteriesVeinsCapillaries
(i) Arteries carry oxygenated blood from heart to various organs of the body.(i)Veins carry deoxygenated blood from various organs to heart.(i) Exchanges of materials between blood and surrounding cells take place in the capillaries.
(ii) They are thick walled.(ii) They are thin walled.(ii)They are thin walled and extremely narrow tubes or blood vessels which connect arteries to veins.



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