Which of these is a part of appendicular skeleton?

Options

A. Ribs
B. Cranium
C. Clavicle
D. Vertebrae

Answer

To determine which of the given options is a part of the appendicular skeleton, we will analyze each option in relation to the skeletal system's classification.

### Step-by-Step Solution:

1. **Understand the Skeletal System**: The human skeletal system is divided into two main parts: the axial skeleton and the appendicular skeleton.

2. **Identify the Axial Skeleton**: The axial skeleton includes:
- Vertebral column (spine)
- Rib cage (ribs)
- Skull (cranium)
- Associated bones

3. **Identify the Appendicular Skeleton**: The appendicular skeleton consists of:
- Pectoral girdles (shoulder girdles)
- Pelvic girdle (hip girdle)
- Upper limbs (arms)
- Lower limbs (legs)

4. **Analyze the Options**:
- **Ribs**: Part of the rib cage, hence part of the axial skeleton.
- **Cranium**: The skull, hence part of the axial skeleton.
- **Clavicle**: Known as the collarbone, it is part of the pectoral girdle, which is included in the appendicular skeleton.
- **Vertebra**: Part of the vertebral column, hence part of the axial skeleton.

5. **Conclusion**: The only option that is part of the appendicular skeleton is the **clavicle**.

### Final Answer:
The part of the appendicular skeleton is **clavicle**.

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