Cranial Nerves and Their Functions Quiz

Cranial Nerves and Their Functions

• Facial nerve (CN VII) is involved in the movement of facial expression muscles except the jaw.

Sensory Functions

• Trigeminal nerve (CN V) is responsible for sensation to the cornea, iris, lacrimal glands, and facial skin.

Swallowing and Phonation

• Glossopharyngeal nerve (CN IX) is responsible for voluntary muscles used in swallowing and phonation.

Sensory Functions

• Vestibulocochlear nerve (CN VIII) is responsible for hearing and equilibrium.

Motor Functions

• Spinal accessory nerve (CN XI) is responsible for motor functions like turning the head and shrugging shoulders.

Olfactory Functions

• Olfactory nerve (CN I) is responsible for smell reception and interpretation.

Autonomic Functions

• Oculomotor nerve (CN III) is responsible for pupillary constriction and changing lens shape.

Mastication and Jaw Functions

• Trigeminal nerve (CN V) is involved in jaw opening, clenching, chewing, and mastication.

Pharyngeal Functions

• Glossopharyngeal nerve (CN IX) is responsible for sensation to the pharynx and taste in the posterior one-third of the tongue.

Eye Movements

• Abducens nerve (CN VI) is responsible for lateral eye movement.

Speech and Swallowing

• Glossopharyngeal nerve (CN IX) is associated with guttural speech sounds and swallowing.

Auditory Functions

• Vestibulocochlear nerve (CN VIII) is responsible for hearing and equilibrium functions.