We cannot bend our elbow backward like the way we can bend and move our shoulder. It is because the elbow joint is a

Options

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

Explanation

**Step-by-Step Solution:**

1. **Understanding Joint Types**: Begin by recognizing that joints in our body allow for different types of movements. There are various types of joints, including hinge joints, ball and socket joints, pivot joints, and gliding joints.

2. **Identifying the Elbow Joint**: The elbow joint is a specific type of joint that allows movement in only one direction. This means that it can bend and straighten but cannot bend backward.

3. **Comparing with the Shoulder Joint**: In contrast, the shoulder joint is a ball and socket joint, which allows for a wide range of movement, including rotation and bending in multiple directions.

4. **Defining the Hinge Joint**: The elbow joint is classified as a hinge joint. Hinge joints function similarly to the hinges on a door, allowing movement in one direction only (like opening and closing).

5. **Conclusion**: Therefore, the reason we cannot bend our elbow backward like we can move our shoulder is that the elbow joint is a hinge joint, which permits movement in one direction only.

**Final Answer**: The elbow joint is a hinge joint.

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