Muscles of the eye

Question 1

Inferior rectus

Answer 1

F: common tendinous ring

T: inferior aspect of the sclera

F: depression, adduction, and extorsion of the eye

I: inferior ramus of the oculomotor nerve

B: opthalmic and infraorbital artery

Question 2

Lateral rectus

Answer 2

F: common tendinous ring

T: lateral aspect of the sclera

F: abduction of the eye

I: abducens (VI) nerve

B: ophthalmic and lacrimal artery

Question 3

Levator palpebrae superioris

Answer 3

F: inferior aspect of the lesser wing of the sphenoid bone

T: tarsus and skin of the upper lid

F: elevation of the upper lid

I: superior ramus of the occulomotor nerve

B: ophthalmic and *supraorbital artery

Question 4

Medial rectus

Answer 4

attachments- from the common tendinous ring to the medial aspect of the sclera

function- adduction of the eye

innervation- inferior ramus of the oculomotor n.

blood supply- ophthalmic, *anterior ethmoidal & *posterior ethmoidal a.

Question 5

Superior oblique

Answer 5

attachments- from the superomedial, posterior aspect of the orbit (body of sphenoid) to the superolateral, posterior aspect of the sclera passing around the trochlea (superomedial, anterior aspect of the orbit)

function_- abduction, depression_ & intorsion of the eye

innervation- trochlear n.

blood supply- ophthalmic, supraorbital, *anterior ethmoidal & *posterior ethmoidal a.

Question 6

Superior rectus

Answer 6

attachments- from the common tendinous ring to the superior aspect of the sclera

function- elevation, adduction & intorsion of the eye

innervation- superior ramus of the oculomotor n.

blood supply- ophthalmic & supraorbital a.

Question 7

Inferior oblique

Answer 7

attachments- from the maxilla lateral to the nasolacrimal groove to the inferolateral, posterior aspect of the sclera

function- elevation, abduction and extorsion of the eye

innervation- inferior ramus of the oculomotor n.

blood supply- ophthalmic & infraorbital a.