In which of the following preparation collagen fibres are present in the form of parallel bundles of fibres ?

Options

A. Tendon
B. Ligament
C. Both 1 and 2
D. None of these

Answer

To determine in which preparation collagen fibers are present in the form of parallel bundles of fibers, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Collagen Fibers**: Collagen fibers are a type of protein fiber found in connective tissues. They provide strength and support to various structures in the body.

2. **Identify Dense Connective Tissues**: Collagen fibers are particularly abundant in dense connective tissues, which are characterized by a high density of collagen fibers arranged in parallel bundles. This arrangement is crucial for providing tensile strength.

3. **Examine the Options**: The question likely provides several options. Common examples of structures containing collagen fibers include tendons, ligaments, cartilage, and other connective tissues.

4. **Analyze Tendons**: Tendons connect muscles to bones and are known for their dense structure. The collagen fibers in tendons are arranged in parallel bundles, which allows them to withstand the pulling forces exerted by muscles.

5. **Analyze Ligaments**: Ligaments connect bones to other bones. Like tendons, ligaments also contain densely packed collagen fibers, but their arrangement can vary. However, they generally do not have the same strict parallel arrangement as tendons.

6. **Conclusion**: Based on the analysis, the structure where collagen fibers are predominantly found in parallel bundles is the tendon. While ligaments also contain collagen fibers, the question specifically asks for the preparation with parallel bundles, which is characteristic of tendons.

7. **Final Answer**: Therefore, the correct answer is **Tendon**.