A mixed cranial nerve is

Options

A. Facial
B. Auditory
C. Abducens
D. Spinal accessory

Answer

### Step-by-Step Solution:

1. **Understanding Cranial Nerves**:
- Cranial nerves are nerves that emerge directly from the brain and are responsible for relaying information between the brain and various body organs.
- There are a total of 12 pairs of cranial nerves.

2. **Categories of Cranial Nerves**:
- Cranial nerves can be categorized into three types:
- **Pure Sensory Nerves**: Carry sensory information to the brain.
- **Pure Motor Nerves**: Carry motor commands from the brain to muscles.
- **Mixed Nerves**: Contain both sensory and motor functions.

3. **Identifying the Types**:
- Out of the 12 cranial nerves:
- 3 are pure sensory (Olfactory, Optic, and Vestibulocochlear).
- 5 are pure motor (Oculomotor, Trochlear, Abducens, Accessory, and Hypoglossal).
- 4 are mixed nerves (Trigeminal, Facial, Glossopharyngeal, and Vagus).

4. **Analyzing the Options**:
- The question asks for a mixed cranial nerve among the options: Facial, Auditory, Abducens, and Spinal Accessory.
- **Facial Nerve (VII)**: This is a mixed nerve as it has both sensory and motor functions.
- **Auditory Nerve (Vestibulocochlear, VIII)**: This is a pure sensory nerve, responsible for hearing and balance.
- **Abducens Nerve (VI)**: This is a pure motor nerve, controlling eye movement.
- **Spinal Accessory Nerve (XI)**: This is also a pure motor nerve, primarily responsible for shoulder and neck movement.

5. **Conclusion**:
- Based on the analysis, the only mixed cranial nerve from the options provided is the **Facial Nerve**.

### Final Answer:
- The mixed cranial nerve is **Facial (Option A)**.