Biology Exercise 21: Cranial nerves

Question 1

I - Olfactory

Answer 1

smell

Question 2

II - Optic

Answer 2

vision

Question 3

III - Oculomotor

Answer 3

movement of eyelid, movement of eyeball, accommodation of lens, pupillary constriction

Question 4

IV - Trochlear

Answer 4

movement of eyeball

Question 5

V - Trigeminal

Answer 5

cutaneous sensations of ophthalmic, mandibular, maxillary areas; chewing

Question 6

VI - Abducens

Answer 6

movement of eyeball

Question 7

VII - Facial

Answer 7

taste, facial expression, secretion of tears, salivation

Question 8

VIII - Vestibulocochlear

Answer 8

hearing and equilibrium

Question 9

IX - Glossopharyngeal

Answer 9

taste, swallowing and speech, secretion of saliva

Question 10

X - Vagus

Answer 10

taste, swallowing and speech, somatic sensations from pharynx and epiglottis, coughing, voice production, muscle contraction of GI tract, slows heart rate, secretion digestive glands

Question 11

XI - Accessory

Answer 11

movement of head neck and shoulders

Question 12

XII - Hypoglossal

Answer 12

speech and swallowing