How many type of synovial joints are there.

Options

A. 4
B. 3
C. 5
D. 6

Answer

To determine how many types of synovial joints there are, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Synovial Joints**:
- Synovial joints are a type of joint that allows for a wide range of motion. They are characterized by a synovial cavity filled with synovial fluid, which reduces friction between the articular cartilages of the bones.

2. **Identifying the Types of Synovial Joints**:
- There are five main types of synovial joints, each allowing for different movements:
- **Planar Joint**: Allows for gliding or sliding movements (e.g., intercarpal joints).
- **Hinge Joint**: Allows for movement in one plane, like a door (e.g., elbow joint).
- **Condyloid Joint**: Allows for movement in two planes (e.g., wrist joint).
- **Saddle Joint**: Allows for movement in two planes with a greater range of motion (e.g., thumb joint).
- **Ball and Socket Joint**: Allows for rotational movement and movement in multiple planes (e.g., shoulder and hip joints).

3. **Conclusion**:
- Based on the identification of these types, we can conclude that there are **five types of synovial joints**.

### Final Answer:
There are **five types of synovial joints**.

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