Which of the following act as auditory receptors in the ear ?

Options

A. Semicircular canals
B. Cristae
C. Hair cells of oragn of corti
D. Saccule and utricle

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which structures in the ear act as auditory receptors. This means we need to identify the part of the ear responsible for detecting sound.

2. **Identifying the Options**: The options provided are:
- Semicircular canals
- Cristae
- Hair cells of organ of Corti
- Saccule and utricle

3. **Analyzing Each Option**:
- **Semicircular Canals**: These are involved in balance and do not act as auditory receptors.
- **Cristae**: These are structures found in the semicircular canals and are also related to balance, not hearing.
- **Hair Cells of Organ of Corti**: These are located in the cochlea of the inner ear and are responsible for converting sound vibrations into nerve impulses. They are indeed the auditory receptors.
- **Saccule and Utricle**: These structures are involved in static balance and do not function as auditory receptors.

4. **Conclusion**: The correct answer is the **Hair cells of the organ of Corti**, as they are specifically designed to detect sound vibrations and convert them into electrical signals sent to the brain.

5. **Final Answer**: Hair cells of the organ of Corti act as auditory receptors in the ear.

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