Papillary muscles are fond in `:-`

Options

A. Haemocoel of cockroach
B. Auricles of heart
C. Ventricles of heart
D. Arm

Answer

### Step-by-Step Solution:

1. **Understanding Papillary Muscles**: Papillary muscles are specialized muscles found in the heart. They play a crucial role in the functioning of the heart valves.

2. **Identifying the Location**: Papillary muscles are specifically located in the ventricles of the heart. They are attached to the heart valves via chordae tendineae.

3. **Analyzing the Options**:
- **Hemipole of Cockroach**: This option is incorrect as cockroaches are not mammals and do not have papillary muscles.
- **Auricle of Heart**: This option is also incorrect. While the auricle is part of the heart, papillary muscles are not located there.
- **Ventricle of Heart**: This is the correct option. Papillary muscles are found in the ventricles of the heart, where they help in the proper functioning of the heart valves.
- **Arm**: This option is incorrect as papillary muscles are not found in the arm.

4. **Conclusion**: Based on the analysis, the correct answer is that papillary muscles are found in the **ventricle of the heart**.