What brings O2 POOR blood from the myocardium to the right atrium?

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Prepare for the Ivy Tech Anatomy and Physiology II (APHY 102) Heart Test with multiple-choice questions, detailed explanations, and study resources. Enhance your understanding and excel in your exam!

Multiple Choice

What brings O2 POOR blood from the myocardium to the right atrium?

Explanation:
The blood from the heart muscle returns to the right atrium through the coronary veins that converge into the coronary sinus, which then drains into the right atrium. The right atrium also receives venous blood from the body via the superior and inferior venae cavae. So, the vessel set that includes the coronary sinus (which actually carries the myocardium’s deoxygenated blood into the right atrium) fits best. Pulmonary veins bring oxygenated blood to the left atrium; the aorta distributes oxygenated blood to the body; the right ventricle pumps blood to the lungs.

The blood from the heart muscle returns to the right atrium through the coronary veins that converge into the coronary sinus, which then drains into the right atrium. The right atrium also receives venous blood from the body via the superior and inferior venae cavae. So, the vessel set that includes the coronary sinus (which actually carries the myocardium’s deoxygenated blood into the right atrium) fits best. Pulmonary veins bring oxygenated blood to the left atrium; the aorta distributes oxygenated blood to the body; the right ventricle pumps blood to the lungs.

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