GROSS ANATOMY
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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left atrium
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right atrium
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left ventricle
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right ventricle
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Detailed explanation-1: -Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart. The oxygen-poor blood enters the right atrium (RA), or the right upper chamber of the heart.
Detailed explanation-2: -The blood vessels include the superior and inferior vena cava. These bring blood from the body to the right atrium. Next is the pulmonary artery that carries blood from the right ventricle to the lungs.
Detailed explanation-3: -A large vein that carries blood to the heart from other areas of the body.
Detailed explanation-4: -Superior vena cava: This large vein delivers oxygen-poor blood from your upper body into your heart’s right atrium.
Detailed explanation-5: -The SVC drains into the right atrium at the level of the third costal cartilage via a valveless orifice at the superior part of the sinus venarum, a smooth part of the posterior wall of the right atrium.