Which one is a part of pectorall girdle?

Options

A. Ilium
B. Ischium
C. Acetabulum
D. Glenoid cavity

Answer

### Step-by-Step Solution:

1. **Understanding the Pectoral Girdle**: The pectoral girdle, also known as the shoulder girdle, is a structure that connects the upper limbs to the axial skeleton. It is essential for the movement and stability of the shoulders and arms.

2. **Identifying the Components**: The pectoral girdle is primarily made up of two bones:
- **Clavicle** (collarbone)
- **Scapula** (shoulder blade)

3. **Analyzing the Options**: The question provides four options: ilium, ischium, abdabellum, and glenoid cavity. We need to determine which of these is part of the pectoral girdle.
- **Ilium**: This is part of the pelvic girdle.
- **Ischium**: This is also part of the pelvic girdle.
- **Abdabellum**: This term does not correspond to any known anatomical structure.
- **Glenoid Cavity**: This is a part of the scapula and serves as the socket for the shoulder joint, where it articulates with the humerus.

4. **Conclusion**: The glenoid cavity is indeed a part of the pectoral girdle as it is associated with the scapula, which is one of the two main bones that make up the girdle.

### Final Answer:
The part of the pectoral girdle is the **glenoid cavity**.

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