Cranial Nerves (I-XII) - Names and Functions Flashcards
What is CN 1 called and what does it do?
Olfactory Nerve: Sense of smell.
What is CN II called and what does it do?
Optic Nerve: Vision.
What is CN III called and what does it do?
Oculomotor Nerve: Eye movement, pupil constriction.
What is CN IV called and what does it do?
Trochlear Nerve: Eye movement (superior oblique muscle).
What is CN V called and what does it do?
Trigeminal Nerve: Sensation to the face and motor functions like chewing. Innervates muscles of mastication
What are the three branches of the CN V trigeminal nerve?
Ophthalmic Branch , Maxillary Branch, Mandibular Branch
What does the Ophthalmic Branch do?
Sensation from the forehead, scalp, and upper eyelids.
What does the Maxillary Branch do?
Sensation from the middle part of the face (cheeks, upper lip).
What does the Mandibular Branch do?
Sensation from the lower part of the face and motor control for mastication.
What is CN VI and what does it do?
Abducens Nerve: Eye movement (lateral rectus muscle).
What is CN VII and what does it do?
Facial Nerve: Facial expressions, taste from the anterior two-thirds of the tongue, secretion of saliva and tears.
What is CN VIII and what does it do?
Vestibulocochlear Nerve: Hearing and balance.
What is CN IX and what does it do?
Glossopharyngeal Nerve: Taste from the posterior one-third of the tongue, swallowing, and saliva production.
What is CN X and what does it do?
Vagus Nerve: Controls muscles of the throat and voice box; regulates heart rate, digestion, and respiratory rate.
What is CN XI and what does it do?
Accessory Nerve: Controls muscles used in head movement (sternocleidomastoid and trapezius).
What is CN XII and what does it do?
Hypoglossal Nerve: Controls tongue movements.
