An anticoagulent mucopolysachharide commonly present in animal body is

Options

A. Chondroitin sulphate
B. Keratan sulphate
C. Heparin
D. Hyaluronic acid.

Answer

To answer the question "An anticoagulant mucopolysaccharide commonly present in animal body is," we need to analyze the options provided:

1. **Chondroitin Sulfate**:
- This is a mucopolysaccharide that is primarily found in cartilage.
- It is involved in the production and maintenance of cartilage and is often used in treatments for osteoarthritis.
- However, it does not have anticoagulant properties, meaning it does not prevent blood clotting.

2. **Keratin Sulfate**:
- Also known as keratosulfate, this mucopolysaccharide is found in the cornea, cartilage, and kidneys.
- It plays a role in corneal development and maintenance but does not function as an anticoagulant.

3. **Heparin**:
- Heparin is a glycosaminoglycan that is produced by basophils and mast cells in the body.
- It is well-known for its anticoagulant properties, meaning it prevents blood clotting.
- Heparin is used therapeutically for anticoagulation in various medical conditions.

4. **Hyaluronic Acid**:
- This is a clear, gooey substance found in connective tissues, skin, and eyes.
- Its primary function is to retain moisture and keep tissues lubricated.
- Hyaluronic acid does not have any role in blood clotting.

After analyzing all the options, the correct answer is **Heparin** (Option 3), as it is the only mucopolysaccharide listed that has anticoagulant properties.

### Summary of Steps:
1. Identify the options provided.
2. Analyze each option for its properties and functions.
3. Determine which option has anticoagulant properties.
4. Conclude that heparin is the correct answer.