Which vessels drain deoxygenated blood from heart muscle tissue and empty into the right atrium?

Which vessels drain deoxygenated blood from heart muscle tissue and empty into the right atrium?

• A. Cardiac Veins
• B. Coronary Arteries
• C. Pulmonary Veins
• D. Aorta

Answer: (A)

The heart’s own venous drainage carries its deoxygenated blood back to the right atrium. Cardiac veins collect blood from the myocardium and converge into the coronary sinus, which empties into the right atrium. This arrangement specifically handles deoxygenated blood from heart muscle tissue returning to the heart. In contrast, coronary arteries deliver oxygenated blood to the heart muscle; pulmonary veins bring oxygenated blood from the lungs to the left atrium; and the aorta distributes oxygenated blood to the systemic circulation. Thus, cardiac veins are the vessels described.

The heart’s own venous drainage carries its deoxygenated blood back to the right atrium. Cardiac veins collect blood from the myocardium and converge into the coronary sinus, which empties into the right atrium. This arrangement specifically handles deoxygenated blood from heart muscle tissue returning to the heart.

In contrast, coronary arteries deliver oxygenated blood to the heart muscle; pulmonary veins bring oxygenated blood from the lungs to the left atrium; and the aorta distributes oxygenated blood to the systemic circulation. Thus, cardiac veins are the vessels described.