Extra-Ocular Muscles

Question 1

Inferior rectus

Answer 1

O: sphenoid around optic canal
I: inferior, medial surface of eyeball
A: eye looks down
N: oculomotor nerve III

Question 2

Medial rectus

Answer 2

O: sphenoid around optic canal
I: medial surface of eyeball
A: eyeblooks medially
N: oculomotor nerve III

Question 3

Superior rectus

Answer 3

O: sphenoid around optic canal
I: superior surface of eyeball
A: eye looks up
N: oculomotor nerve III

Question 4

Lateral rectus

Answer 4

O: sphenoid around optic canal
I: lateral surface of eyeball
A: eye looks laterally
N: abducens nerve VI

Question 5

Inferior oblique

Answer 5

O: maxilla at anterior portion of orbit
I: inferior, lateral surface of eyeball
A: eye rolls, looks up and laterally
N: oculomotor nerve III

Question 6

Superior oblique

Answer 6

O: sphenoid around optic canal
I: superior, lateral surface of eyeball
A: eye rolls, looks down and laterally
N: trochkear nerve IV