Question

AI Question

Give reason for the following :
(i) The muscular walls of ventricles are thicker than the walls of atria

(ii) Arteries have thick elastic walls
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Answer 1

Answer:

(i) The lower chambers are the right and left ventricles, which receive blood from the atria above. Their muscular walls are thicker than the atria because they have to pump blood out of the heart. Although the left and right ventricle are similar in structure, the walls of the left ventricle are thicker and stronger.

(ii)The elastic wall of arteries helps to maintain a pressure gradient that drives the blood through the arterial system.

Answer 2

Ventricles and arteries pump blood to different body parts and have thicker walls to sustain pressure

hope this helps