BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
BLOOD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pulmonary Artery
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Pulmonary Veins
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Aorta
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Inferior Vena Cava
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Superior Vena Cava
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Detailed explanation-1: -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.
Detailed explanation-2: -The IVC enters the right atrium of the heart after coursing through the diaphragm, entering the posterior inferior aspect of the atrium. The IVC enters the right atrium inferior to the entrance of the superior vena cava (SVC).
Detailed explanation-3: -The superior vena cava (SVC) starts at the confluence of the brachiocephalic veins behind the first right costal cartilage, and ends at the level of the third right costal cartilage where it drains into the right atrium.
Detailed explanation-4: -The SVC is a large vein that drains blood away from the head, neck, arms, and upper chest and into the heart.