In the serial wise arrangement of cranial nerves, after which nerves we got trochlear nerve ?

Options

A. Optic
B. Olfactory
C. Oculomotor
D. Trigeminal

Answer

To solve the question "In the serial wise arrangement of cranial nerves, after which nerves do we get the trochlear nerve?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Cranial Nerves**: There are 12 pairs of cranial nerves that arise from the brain. Each cranial nerve has a specific number and function, categorized as sensory, motor, or mixed.

2. **Identify the Trochlear Nerve**: The trochlear nerve is known as the 4th cranial nerve. It is primarily a motor nerve, responsible for innervating the superior oblique muscle of the eye.

3. **List the Cranial Nerves in Order**: The first few cranial nerves are:
- 1st: Olfactory (sensory)
- 2nd: Optic (sensory)
- 3rd: Oculomotor (motor)
- 4th: Trochlear (motor)

4. **Determine the Position of the Trochlear Nerve**: Since the trochlear nerve is the 4th cranial nerve, we need to identify which cranial nerve comes immediately before it.

5. **Identify the Nerve Before the Trochlear Nerve**: The cranial nerve that comes directly before the trochlear nerve is the oculomotor nerve, which is the 3rd cranial nerve.

6. **Conclusion**: Therefore, the trochlear nerve comes after the oculomotor nerve in the serial arrangement of cranial nerves.

### Final Answer:
The trochlear nerve comes after the **oculomotor nerve**.

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