Extraoccular muscles

Question 1

Attachment of rectus muscles

Answer 1

Originate at the common tendinous ring and attach onto the sclera.

Question 2

Action innervation and attachments of the superior rectus

Answer 2

Attaches to anteriosuperior sclera
primary action: elevation
Contributes to adduction and medial rotation
innervated by CN III

Question 3

Action, innervation and attachments of inferior rectus

Answer 3

innervated by CN III
Attachment: inferioanterior sclera
primary action is depression. also contributes to adduction and lateral rotation.

Question 4

Action, innervation and attachment of medial rectus

Answer 4

Adducts the eyeball
CN III
attaches to anteromedial sclera

Question 5

Innervation, attachment and movement of lateral rectus

Answer 5

CN VI
abducts
attaches to anterolateral sclera

Question 6

Attachment, innervation and action of Superior oblique

Answer 6

Attaches from body of sphenoid to the sclera posterior to the superior rectus.
Innervation: CN IV
action: depresses, abducts and ,medially rotates the eye

Question 7

Attachment, innervation and action of inferior oblique

Answer 7

anterior aspect of orbital floor to posterior of the lateral rectus.
CN III
elevates, abducts and laterally rotates the eye.