Neuro Cranial Nerve Reflexes

Question 1

Afferent and Efferent nerves for:

Corneal Reflex

Answer 1

V1 opthalmic nerve
to
(Bilateral) VII temporal branch to obicularis oculi

Question 2

Afferent and Efferent nerves for:

Lacrimation Reflex

Answer 2

V1 opthalmic nerve
to
VII to lacrimal glands

Question 3

Afferent and Efferent nerves for:

Jaw Jerk Reflex

Answer 3

V3 sensory (Masseter muscle spindle)
to
V3 motor (Masseter contracts)

Question 4

Afferent and Efferent nerves for:

Pupillary Reflex

Answer 4

CN II
Edinger-westphal Nucleus
CN III (Myosis)

Question 5

Afferent and Efferent nerves for:

Gag Reflex

Answer 5

IX
Nucleus solitarius to Nucleus ambiguous
X

Question 6

Afferent and Efferent nerves for:

Cough Reflex

Answer 6

X
to
X

Question 7

Afferent and Efferent nerves for:

Carotid Sinus Reflex

Answer 7

IX (carotid baroreceptors)
to
X

Question 8

Which cranial nerve(s) opens and closes the eyelid.

Answer 8

Open CN III via Levator Palpebre

Close CN VII via Obicularis Palpebre

Question 9

Which cranial nerve gives sensation to the cornea (eyeball)

Answer 9

CN V1 opthalmic nerve