ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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thinner; lower pressures
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lighter; systole
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thicker; higher pressures
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heavier; diastole
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Detailed explanation-1: -The ventricles form the lower chambers of the heart. The muscular walls of ventricles are thicker compared to atria as they have to pump blood out of the heart. They pump blood at a higher pressure to ensure it reaches all parts of the body.
Detailed explanation-2: -Ventricles have thicker walls than atria because they have to pump blood to different organs with high pressure while atria just receive blood from other parts of the body.
Detailed explanation-3: -The walls of the ventricles are thicker and stronger than those of the atria. The physiologic load on the ventricles, which pump blood throughout the body and lungs, is much greater than the pressure generated by the atria to fill the ventricles.
Detailed explanation-4: -The two atria are thin-walled chambers that receive blood from the veins. The two ventricles are thick-walled chambers that forcefully pump blood out of the heart.