Which of the following cranial nerves has a parasympathetic component?Multiple ChoiceFacialTrochlearTrigeminalHypoglossalAccessory

To determine which cranial nerve has a parasympathetic component, let's analyze each option provided:

1. Facial Nerve (VII): This nerve has a significant parasympathetic component, innervating the lacrimal glands, submandibular and sublingual salivary glands.

2. Trochlear Nerve (IV): This nerve primarily serves motor functions for eye movement and does not have a parasympathetic component.

3. Trigeminal Nerve (V): This nerve is primarily sensory with a motor component for mastication but it does not include parasympathetic fibers.

4. Hypoglossal Nerve (XII): This nerve controls tongue movements and does not possess a parasympathetic component.

5. Accessory Nerve (XI): This nerve primarily innervates neck muscles (sternocleidomastoid and trapezius) and does not contain parasympathetic fibers.

Conclusion

Based on the analysis above, the Facial Nerve (VII) is the correct answer, as it is the cranial nerve among the options presented that has a parasympathetic component.