Joint between Incus & stapes is `:-`

Options

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

Answer

To determine the type of joint between the incus and stapes, we need to analyze the structure and function of these bones in the middle ear.

### Step-by-Step Solution:

1. **Identify the Bones**: The incus and stapes are two of the three auditory ossicles located in the middle ear. The third ossicle is the malleus.

2. **Understand the Function of the Ossicles**: The primary role of these bones is to transmit sound vibrations from the tympanic membrane (eardrum) to the inner ear.

3. **Determine the Joint Type**:
- The joint between the malleus and incus is a **hinge joint**, allowing for a back-and-forth motion.
- The joint between the incus and stapes is different. This joint allows for a more complex movement.

4. **Identify the Joint Between Incus and Stapes**:
- The joint between the incus and stapes is classified as a **ball and socket joint**. In this joint, one bone has a rounded end (the ball) that fits into a cup-like structure (the socket) of the other bone, allowing for a greater range of motion.

5. **Conclusion**: Therefore, the correct answer to the question regarding the joint between the incus and stapes is that it is a **ball and socket joint**.

### Final Answer:
The joint between the incus and stapes is a **ball and socket joint**.

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