Which of the following parts of heart first receives deoxygenated blood ?

Options

A. Right ventricle
B. Left auricle
C. Right auricle
D. Left ventricle

Answer

To determine which part of the heart first receives deoxygenated blood, we can analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Heart Anatomy**: The heart consists of four chambers: the right atrium (auricle), right ventricle, left atrium (auricle), and left ventricle. The right side of the heart deals with deoxygenated blood, while the left side handles oxygenated blood.

2. **Analyzing Option A - Right Ventricle**:
- The right ventricle does not directly receive deoxygenated blood. Instead, it receives blood from the right atrium and pumps it to the lungs for oxygenation.
- Therefore, this option is incorrect.

3. **Analyzing Option B - Left Auricle**:
- The left auricle receives oxygenated blood from the lungs through the pulmonary veins.
- Since it does not receive deoxygenated blood, this option is also incorrect.

4. **Analyzing Option C - Right Auricle**:
- The right auricle (or right atrium) is the first chamber of the heart that receives deoxygenated blood returning from the body via the superior and inferior vena cavae.
- This makes this option the correct answer.

5. **Analyzing Option D - Left Ventricle**:
- The left ventricle pumps oxygenated blood to the body. It does not receive deoxygenated blood.
- Thus, this option is incorrect.

### Conclusion:
The part of the heart that first receives deoxygenated blood is the **Right Auricle (Right Atrium)**.

### Final Answer:
**Option C - Right Auricle**

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