Orbital Contents

Question 1

What innervates the lateral rectus?

Answer 1

Abducens Nerve (CN VI)

Question 2

What innervates the superior oblique muscle?

Answer 2

Trochlear Nerve (CN IV)

Question 3

What innervates the Superior Rectus muscle?

Answer 3

Oculomotor (CN III)

Question 4

What innervates the Inferior Rectus muscle?

Answer 4

Oculomotor (CN III)

Question 5

What innervates the Medial Rectus muscle?

Answer 5

Oculomotor (CN III)

Question 6

What innervates the Inferior Oblique muscle?

Answer 6

Oculomotor (CN III)

Question 7

What innervates the Levator Palpebrae Superioris?

Answer 7

Oculomotor (CN III)

Question 8

What is the superior tarsal muscle (Muller’s muscle) made of? What does it do? What innervates it?

Answer 8

Smooth muscle, elevates the eyelid, innervated by sympathetic neurons (post-ganglionic neurons who’s cell bodies are in the superior cervical ganglion.

Question 9

The eyeball receives sensory fibers from. . .

Answer 9

Oculomotor nerve &

Trigeminal nerve

Question 10

What nerve sends fibers to the short ciliary nerve and innervates the ciliary muscle and constrictor of the pupil?

Answer 10

Oculomotor nerve (CN III)