The mitral valve is supported by `:-`

Options

A. Bundle of HIS
B. Ductus arteriosus
C. Foramen ovale
D. Chordae tendinae

Answer

**Step-by-Step Solution:**

1. **Understanding the Heart Structure**: The heart consists of four chambers: the right atrium, left atrium, right ventricle, and left ventricle. Each chamber is separated by valves that ensure unidirectional blood flow.

2. **Identifying the Mitral Valve**: The mitral valve, also known as the bicuspid valve, is located between the left atrium and the left ventricle. It has two cusps that open and close to regulate blood flow.

3. **Role of the Chordae Tendineae**: The mitral valve is supported by structures called chordae tendineae. These are fibrous cords that connect the valve cusps to the papillary muscles located in the ventricles.

4. **Function of Papillary Muscles**: When the ventricles contract, the papillary muscles also contract, pulling on the chordae tendineae. This action prevents the valve cusps from collapsing back into the atrium, ensuring that blood flows in the correct direction.

5. **Conclusion**: Therefore, the mitral valve is supported by the chordae tendineae, which connect it to the papillary muscles in the ventricles.

**Final Answer**: The mitral valve is supported by the chordae tendineae.

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