Joint that produces an angular motion and permits only flexion and extension is

Options

A. gliding joint
B. hinge joint
C. pivot joint
D. ball and socket joint

Answer

To solve the question regarding which joint produces angular motion and permits only flexion and extension, we can analyze the options provided:

1. **Understanding the Options**:
- **Option A: Gliding Joint**: This type of joint allows for sliding movements between bones. It does not primarily allow for flexion and extension, so this option is incorrect.
- **Option B: Hinge Joint**: This joint allows for movement in one plane, specifically flexion and extension. It is characterized by a back-and-forth motion, similar to the action of a door hinge. This option is correct.
- **Option C: Pivot Joint**: This joint allows for rotational movement around a single axis. While it does allow for some angular motion, it is not limited to just flexion and extension. Therefore, this option is incorrect.
- **Option D: Ball and Socket Joint**: This joint allows for a wide range of motion in multiple directions, including flexion, extension, rotation, and more. Thus, this option is also incorrect.

2. **Conclusion**:
Based on the analysis, the joint that produces angular motion and permits only flexion and extension is the **Hinge Joint** (Option B).

### Step-by-Step Solution:
1. Identify the types of joints listed in the options.
2. Analyze the movement characteristics of each joint type.
3. Determine which joint allows only flexion and extension.
4. Conclude that the Hinge Joint is the correct answer.