Ilium is part of

Options

A. Small intestine
B. Pectoral girdle
C. Pulmonary track
D. Pelvic girdle.

Answer

To answer the question "Ilium is part of," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term 'Ilium':**
- The ilium is one of the three bones that make up each half of the pelvic girdle.

2. **Identify the Options Given:**
- The options provided are:
- A) End options of small intestine
- B) Pectoral girdle
- C) Pulmonary tract
- D) Pelvic girdle

3. **Analyze Each Option:**
- **A) End options of small intestine:**
- The small intestine consists of three parts: duodenum, jejunum, and ileum. The term "ileum" is often confused with "ilium," but they refer to different structures. The ileum is the last part of the small intestine, while the ilium is a bone.
- **B) Pectoral girdle:**
- The pectoral girdle consists of bones like the clavicle and scapula, which are not related to the ilium.
- **C) Pulmonary tract:**
- The pulmonary tract refers to the respiratory system, including the lungs and airways, which does not include the ilium.
- **D) Pelvic girdle:**
- The pelvic girdle is made up of two coxal bones, each formed by the fusion of three bones: ilium, ischium, and pubis. Therefore, the ilium is indeed part of the pelvic girdle.

4. **Conclusion:**
- Based on the analysis, the correct answer is **D) Pelvic girdle**.