9th Pair of cranial nerve in human is

Options

A. Vagus
B. Trigeminal
C. Hypoglossal
D. Glossopharyngeal

Answer

**Step-by-Step Solution:**

1. **Understanding Cranial Nerves**: The human body has 12 pairs of cranial nerves, each with specific functions related to sensory and motor activities.

2. **Identifying the Options**: The question provides four options for the 9th cranial nerve:
- Option 1: Vagus
- Option 2: Trigeminal
- Option 3: Hypoglossal
- Option 4: Glossopharyngeal

3. **Evaluating Each Option**:
- **Option 1: Vagus**: This is the 10th cranial nerve, which is involved in autonomic functions and sensations from the visceral organs. Therefore, this option is incorrect.
- **Option 2: Trigeminal**: This is the 5th cranial nerve, responsible for sensation in the face and motor functions such as biting and chewing. Thus, this option is also incorrect.
- **Option 3: Hypoglossal**: This is the 12th cranial nerve, which controls the muscles of the tongue. Hence, this option is incorrect as well.
- **Option 4: Glossopharyngeal**: This is the 9th cranial nerve, which is responsible for taste and other functions related to the pharynx and tongue. This option is correct.

4. **Conclusion**: The 9th pair of cranial nerves in humans is the **Glossopharyngeal nerve**.

**Final Answer**: The 9th pair of cranial nerve in humans is the **Glossopharyngeal nerve**.

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