Which of the following statements is not true for chylomicrons?

Options

A. Chylomicrons are formed inside the lumen of small intestine .
B. chylomicrons are protein coated fat droplets
C. Chylomicron contains triglycerides , cholesterol and phospholipids
D. Chylomicron released from epithelial cells of small intestine into lacteals.

Answer

To determine which statement is not true for chylomicrons, let's analyze the provided statements step by step.

### Step-by-Step Solution:

1. **Understanding Chylomicrons**: Chylomicrons are lipoprotein particles that transport dietary lipids from the intestines to other locations in the body. They are formed in the intestinal mucosa after the digestion of fats.

2. **Statement Analysis**:
- **Statement 1**: "They are formed inside the lumen of small intestine."
- This statement is incorrect. Chylomicrons are formed inside the epithelial cells of the small intestine, not in the lumen itself. Therefore, this statement is not true.

- **Statement 2**: "They are protein-coated fat droplets."
- This statement is correct. Chylomicrons are indeed protein-coated fat droplets, which help in transporting lipids in the body.

- **Statement 3**: "They contain triglycerides, cholesterol, and phospholipids."
- This statement is also correct. Chylomicrons are composed of triglycerides, cholesterol, and phospholipids, which are essential components for their structure and function.

- **Statement 4**: "Chylomicrons are released from epithelial cells of the small intestine into lacteals."
- This statement is correct. After their formation, chylomicrons are released from the intestinal epithelial cells into the lacteals, which are specialized lymphatic vessels.

3. **Conclusion**: The statement that is not true for chylomicrons is the first one: "They are formed inside the lumen of small intestine."

### Final Answer:
The statement that is not true for chylomicrons is: **"They are formed inside the lumen of small intestine."**

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