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Coronary sinus carries to the right atr...

Coronary sinus carries ____ to the right atrium.

A

Interstitial fluid

B

Deoxygenated blood

C

Lymph

D

Oxygenated blood

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question "Coronary sinus carries ____ to the right atrium," we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Coronary Sinus**: The coronary sinus is a large vein that collects deoxygenated blood from the myocardium (the heart muscle) and drains it into the right atrium of the heart. 2. **Identifying the Function of the Coronary Sinus**: The primary function of the coronary sinus is to return deoxygenated blood from the heart muscle back to the right atrium. This is crucial because the heart muscle itself requires oxygen, and after the oxygen has been utilized, the blood must be returned to the heart for re-oxygenation. 3. **Reviewing the Options**: The options given are: - Interstitial fluid - Deoxygenated blood - Lymph - Oxygenated blood 4. **Eliminating Incorrect Options**: - **Interstitial Fluid**: This fluid exists between cells and is not transported by the coronary sinus. - **Lymph**: This is part of the lymphatic system and is not carried by the coronary sinus. - **Oxygenated Blood**: The coronary sinus does not carry oxygenated blood; instead, it carries blood that has already delivered oxygen to the tissues. 5. **Conclusion**: The only correct option is **deoxygenated blood**. The coronary sinus specifically carries deoxygenated blood from the myocardium to the right atrium. ### Final Answer: Coronary sinus carries **deoxygenated blood** to the right atrium. ---
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