ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The return of blood to the heart through veins is assisted by:(pick 3)
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high pressure in the right atrium
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contractions of the skeletal muscles
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the valves in the veins
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lower pressure in the thoracic cavity
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low pressure in the left ventricle
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Explanation:
Detailed explanation-1: -Very little pressure remains by the time blood leaves the capillaries and enters the venules. Blood flow through the veins is not the direct result of ventricular contraction. Instead, venous return depends on skeletal muscle action, respiratory movements, and constriction of smooth muscle in venous walls.
Detailed explanation-2: -The coronary veins return oxygen-low blood from the heart’s muscles back to the right atrium so it can be pumped to the lungs.
There is 1 question to complete.