Extrinsic muscles of eye

Question 1

Origin of all rectus?

Answer 1

Common tendinous ring

Question 2

Insertion of superior rectus?

Answer 2

Anterosuperior eyeball

Question 3

Insertion of inferior rectus?

Answer 3

Anteroinferior

Question 4

Insertion of medial rectus?

Answer 4

Anteromedial

Question 5

Insertion of lateral rectus?

Answer 5

Anterolateral

Question 6

Origin and insertion of superior oblique?

Answer 6

O - Sphenoid in orbit

I - Posterosuperior eyeball

Question 7

Origin and insertion of inferior oblique?

Answer 7

O - Orbital portion of maxilla

I - Posteroinferior eyeball

Question 8

Actions of each rectus?

Answer 8

Superior - elevates, Inferior - depresses (ABDUCTION), Medial - adducts, Lateral - abducts

Question 9

Action of superior oblique?

Answer 9

Depresses in adduction

Question 10

Action of inferior oblique?

Answer 10

Elevates in adduction

Question 11

Innervation of superior, inferior, medial rectus and inferior oblique?

Answer 11

Oculomotor nerve

Question 12

Innervation of lateral rectus?

Answer 12

Abducens nerve

Question 13

Innervation of superior oblique?

Answer 13

Trochlea nerve