Muscles of Eyeballs

Question 1

superior rectus

Answer 1

O: common tendinous ring (attached to orbit around optic foramen)
I: superior and central part of eyeballs
A: superior and medially (adducted eye), medial rotation
N: CNIII - occulomotor

Question 2

inferior rectus

Answer 2

O: common tendinous ring (attached to orbit around optic foramen)
I: inferior and central part of eyeballs
A: inferior and medially (adducted eye), medial rotation
N: CNIII - occulomotor

Question 3

lateral rectus

Answer 3

O: common tendinous ring (attached to orbit around optic foramen)
I: lateral side of eyeballs
A: lateral movement
N: CNVI - abducens

Question 4

medial rectus

Answer 4

O: common tendinous ring (attached to orbit around optic foramen)
I: medial side of eyeballs
A: medial movement
N: CNIII - occulomotor

Question 5

superior oblique

Answer 5

O: sphenoid bone, superior and medial to common tendinous ring in orbit
I: eyeball between superior and lateral recti. muscle inserts into superior and lateral surfaces of eye via tendon that passes through trochlea
A: inferior and laterally (abducted eye), medial rotation
N: CNIV - trochelar

Question 6

inferior oblique

Answer 6

O: maxilla in floor of orbit
I: eye between inferior and lateral recti
A: superior and laterally (abducted eye), lateral rotation
N: CNIII - occulomotor