Sutures are made up of :

Options

A. Yellow elastic connective tissue
B. Dense fibrous connective tissue
C. Calcified cartilage
D. White fibrocartilage

Answer

To solve the question "Sutures are made up of:", we will analyze the options provided and determine which type of connective tissue is correct.

### Step-by-Step Solution:

1. **Understanding Sutures**:
- Sutures are fibrous joints found between the bones of the skull. They are immovable joints that connect flat plate-like bones.

2. **Evaluating the Options**:
- **Option A: Yellow Elastic Connective Tissue**:
- This type of connective tissue is characterized by elastic fibers that give it a yellow appearance and high elasticity. It is not found in sutures.
- **Option B: Dense Fibrous Connective Tissue**:
- This tissue consists mainly of collagen fibers and is responsible for connecting the bones in sutures. This is the correct answer.
- **Option C: Calcified Cartilage**:
- This type of cartilage is found between articular cartilage and subchondral bone, not in sutures.
- **Option D: White Fibrocartilage**:
- While this type of cartilage is tough and elastic, it is typically found in areas such as intervertebral discs and menisci, not in sutures.

3. **Conclusion**:
- Based on the analysis, the correct answer is **Option B: Dense Fibrous Connective Tissue**. This tissue type is what sutures are made of, allowing for the connection of skull bones.