During the joint diastole heart receive?

Options

A. Deoxygenated blood
B. Oxygenated blood
C. Venous blood
D. None

Answer

### Step-by-Step Solution:

1. **Understanding Joint Diastole**: Joint diastole is a phase in the cardiac cycle where both the atria and ventricles of the heart are in a relaxed state. This phase lasts for approximately 0.4 seconds.

2. **Filling of the Heart**: During joint diastole, both the atria and ventricles are filled with blood. This is a crucial phase for the heart as it prepares for the next contraction.

3. **Types of Blood Filling**:
- The atria receive deoxygenated blood from the body through the superior and inferior vena cavae into the right atrium.
- Simultaneously, the left atrium receives oxygenated blood from the lungs through the pulmonary veins.

4. **Conclusion**: Therefore, during joint diastole, the heart receives both deoxygenated blood (into the right atrium) and oxygenated blood (into the left atrium).

5. **Final Answer**: The correct answer is that during joint diastole, the heart receives both oxygenated and deoxygenated blood.