The coxal of the pelvic girdle is formed by the fusion of

Options

A. ilium and scapula
B. clavicle and pubis
C. scapula and clavicle
D. ilium, ischium and pubis

Answer

To answer the question, "The coxal of the pelvic girdle is formed by the fusion of," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Coxal Bone**: The coxal bone, also known as the hip bone, is a crucial part of the pelvic girdle. It plays a significant role in supporting the weight of the body and facilitating movement.

2. **Identifying the Components**: Each coxal bone is formed by the fusion of three distinct bones. These bones are:
- **Ilium**: The largest and uppermost part of the coxal bone.
- **Ischium**: The lower and back part of the coxal bone.
- **Pubis**: The front part of the coxal bone.

3. **Fusion of the Bones**: These three bones fuse together during development to form a single coxal bone. This fusion occurs at a specific point, which is critical for the structural integrity of the pelvic girdle.

4. **Formation of the Acetabulum**: At the point where these three bones meet, a cavity is formed known as the **acetabulum**. This cavity is important as it serves as the socket for the femur (thigh bone), allowing for hip joint movement.

5. **Conclusion**: Based on the information gathered, we can conclude that the coxal bone of the pelvic girdle is formed by the fusion of the ilium, ischium, and pubis. Therefore, the correct answer to the question is option 4: ilium, ischium, and pubis.

### Final Answer:
The coxal of the pelvic girdle is formed by the fusion of the ilium, ischium, and pubis (Option 4).

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