(a) How many types of blood vessels are there in the human body? Name them. (b) Why does the heart need valves?
BiologyClass 10ICSEAnswered 27 Mar 2026
Answer
(a) There are three types of blood vessels in the human body namely, arteries, veins and capillaries.
(b) The heart needs valves to regulate the flow of blood. It helps in the movement of blood in a single direction.
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