The cranial nerves through which the parasympathetic fibers leave the brainstem are oculomotor, facial, glossopharyngeal, and vagus nerves.
<h3>What is cranial nerves?</h3>
Cranial nerves (CN) are those nerves that are made up of 12 pairs of nerves that connect the brain to different parts of the head, neck, and trunk.
The cranial nerves include the following:
- olfactory (CN I),
- optic (CN II),
- oculomotor (CN III),
- trochlear (CN IV),
- trigeminal (CN V),
- abducent (or abducens; CN VI),
- facial (CN VII),
- vestibulocochlear (CN VIII),
- glossopharyngeal (CN IX),
- vagus (CN X), accessory (CN XI), and hypoglossal (CN XII).
Of all the listed cranial nerves, the ones that leave the brainstem are
Oculomotor: This is the cranial nerve that helps to adjust and coordinate eye position during movement.
facial nerve: This is the cranial nerve that carries nerve fibers that control facial movement and expression.
Glossopharyngeal nerve: This is the cranial nerve that provides motor innervation to the stylopharyngeus muscle, which is responsible for elevating the pharynx and larynx.
Vagus nerves: This is the cranial nerve that controls specific body functions such as your digestion, heart rate and immune system.
Learn more about nerves here:
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