Lacteals take part

Options

A. Digestion of milk
B. Absorption of fat
C. Digestion of lactic acid
D. None of the above

Answer

### Step-by-Step Solution:

1. **Understanding Lacteals**:
- Lacteals are specialized lymphatic capillaries located in the small intestine. They play a crucial role in the absorption of dietary fats.

2. **Digestion of Fats**:
- Fats are emulsified by bile salts produced in the liver. This process breaks down large fat globules into smaller micelles, which facilitates their absorption.

3. **Formation of Micelles**:
- The bile salts help in forming micelles, which are small aggregates of fat molecules that can easily interact with the intestinal lining.

4. **Absorption Process**:
- When micelles reach the absorptive cells (enterocytes) of the small intestine, the long-chain fatty acids and monoglycerides are released from the micelles and enter the cells.

5. **Recombination in Absorptive Cells**:
- Inside the absorptive cells, the fatty acids and monoglycerides are recombined to form triglycerides.

6. **Formation of Chylomicrons**:
- The triglycerides are then coated with proteins to form chylomicrons, which are lipoprotein particles that transport fats.

7. **Entry into Lacteals**:
- Due to their large size, chylomicrons cannot enter blood capillaries directly. Instead, they enter the lacteals, which are the lymphatic vessels in the intestine.

8. **Transport through the Lymphatic System**:
- After entering the lacteals, the chylomicrons travel through lymphatic vessels to the thoracic duct.

9. **Final Destination**:
- From the thoracic duct, the chylomicrons eventually enter the bloodstream, where they are transported to various tissues, including the liver and adipose tissue.

10. **Conclusion**:
- Therefore, lacteals are specifically involved in the absorption of fats from the digestive system into the lymphatic system before they reach the bloodstream.

### Final Answer:
Lacteals take part in the absorption of fats.