Biology

Question 1

Cranial Nerve I

Answer 1

Olfactory - sensory

Question 2

Cranial Nerve II

Answer 2

Optic - sensory

Question 3

Cranial Nerve III

Answer 3

Oculomotor (motor) - raise eyelids, pupillary constriction, lens shape

Question 4

Cranial Nerve IV

Answer 4

Trochlear (motor) - downward/inward eye movement

Question 5

Cranial Nerve V

Answer 5

Trigeminal (both)
Motor - jaw opening/closing, chewing
Sensory - cornea, iris, lacrimal glands, conjunctiva, eyelids, forehead, nose, teeth, tongue, ear, facial skin

Question 6

Cranial Nerve VI

Answer 6

Abducens (motor) - lateral eye movement

Question 7

Cranial Nerve VII

Answer 7

Facial (both) -
Motor - facial expression muscles, close eyelids, labial speech
Sensory - taste (anterior 2/3 of tongue), pharynx, saliva/tears

Question 8

Cranial Nerve VIII

Answer 8

Vestibulocochlear (sensory)
hearing & equilibrium

Question 9

Cranial Nerve IX

Answer 9

Glossopharyngeal (both)
Motor - voluntary swallowing, guttural speech.
Sensory - nasopharynx, gag reflex, taste (posterior 1/3 of tongue), salivary gland, carotid reflex

Question 10

Cranial Nerve X

Answer 10

Vagus (both)
Motor -
Sensory - sensation behind ear/ear canal, digestive enzyme secretion, peristalsis, carotid reflex, involuntary heart/lungs/digest action

Question 11

Cranial Nerve XI

Answer 11

Accessory (motor)
Turn head, shrug shoulder, some phonation

Question 12

Cranial Nerve XII

Answer 12

Hypoglossal (motor)
tongue movement for speech & swallowing