Lab Practical #3: Cranial Nerves Functions

Question 1

Olfactory nerve

Answer 1

sensory nerve for olfaction (smell)

Question 2

Optic nerve

Answer 2

sensory nerve for sight

Question 3

Oculomotor nerve

Answer 3

Motor nerve that controls muscles that move eye, lift eyelid, change pupil diameter, change lens shape

Question 4

Trochlear nerve

Answer 4

Motor nerve that controls superior oblique eye muscle

Question 5

Trigeminal nerve

Answer 5

Mixed nerve that receives somatic sensation from face; controls muscles involved in chewing

Question 6

Abducens nerve

Answer 6

Motor nerve that controls lateral rectus muscle that abducts eye

Question 7

Facial nerve

Answer 7

Mixed nerve that controls muscles of facial expression and conducts taste sensations from tongue

Question 8

Vestibulocochlear nerve

Answer 8

Sensory nerve involved in hearing and equilibrium

Question 9

Glossopharyngeal nerve

Answer 9

Mixed nerve that receives taste and touch from tongue; motor control of a pharynx muscle

Question 10

Vagus nerve

Answer 10

Mixed nerve that controls muscles in pharynx and larynx; conducts sensation from many viscera; major source of parasympathetic output

Question 11

Accessory nerve

Answer 11

Motor nerve that controls muscles of neck, pharynx

Question 12

Hypoglossal nerve

Answer 12

Motor nerve that controls tongue muscles