Match the following and choose the correct option
`{:("Types of synovial joints" , "Bones involved"),("Ball and socket", 1."Carpal and metacarpal of thumb"),("Hinge", 2."Atlas and axis"),("Pivot",3."Frontal and parietal"),("Saddle",4."Knee"),(,5."Humerus and pectoral girdle"):}`

Options

A. A = 1, B = 3, C = 4, D = 5
B. A = 5, B = 4, C = 2, D = 1
C. A = 5, B = 4, C = 3, D = 1
D. A = 1, B = 2, C = 5, D = 4

Answer

To solve the matching question regarding types of synovial joints and the bones involved, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Synovial Joints**: We have four types of synovial joints to match:
- Ball and socket
- Hinge
- Pivot
- Saddle

2. **Understand Each Joint Type**:
- **Ball and Socket Joint**: Allows for a wide range of movement in multiple directions. Example: Shoulder and hip joints.
- **Hinge Joint**: Allows movement in one direction, similar to a door hinge. Example: Elbow and knee joints.
- **Pivot Joint**: Allows for rotational movement. Example: The joint between the first and second cervical vertebrae (atlas and axis).
- **Saddle Joint**: Allows for movement in two directions, providing stability and flexibility. Example: The joint at the base of the thumb.

3. **Match Each Joint Type with the Correct Bones**:
- **Ball and Socket**: Humerus and pectoral girdle (5)
- **Hinge**: Knee (4)
- **Pivot**: Atlas and axis (2)
- **Saddle**: Carpal and metacarpal of thumb (1)

4. **Compile the Matches**:
- Ball and Socket → Humerus and pectoral girdle (5)
- Hinge → Knee (4)
- Pivot → Atlas and axis (2)
- Saddle → Carpal and metacarpal of thumb (1)

5. **Choose the Correct Option**: Based on the matches, we can summarize the correct pairings.

### Final Matches:
- Ball and Socket: Humerus and pectoral girdle (5)
- Hinge: Knee (4)
- Pivot: Atlas and axis (2)
- Saddle: Carpal and metacarpal of thumb (1)