5. Anatomy of extra ocular muscles

Question 1

what are all the anatomical characteristics of the superior rectus ?

Answer 1

origin - common tendinous ring
insertion - superioir anterioir surface of sclera
innervation - occulomotor nerve
blood supply - ophthalmic artery
action - adduction , depression , internal roation

Question 2

what are all the anatomical characteristics of elevator palpebral superior ?

Answer 2

origin - sphenoid part of the orbit
insertion - skin and basal plates of the eyelid
innervation - superior branch of oculomotor nerve
blood supply - ophthalmic artery
fuction - elevates and retracts the eyelid

Question 3

what are the anatomical characteristics of superior oblique muscle ?

Answer 3

origin - common tendinous ring 
(annulus of inn) 
insertion - superior lateral scelra 
innervation - trochlea nerve 
blood supply -opthalmic artery 
action - medially rotates the eye - intorsion

Question 4

what are the anatomical characteristics of lateral rectus muscle ?

Answer 4

orign - annulus of inn
insertion - lateral anterioir surface of the eye in the sclera
innervation - abducens
blood supply - ophthalmic artery
action - abducts (away from midline) , moves the eye laterally

Question 5

what are the anatomical characteristics of medial rectus muscle ?

Answer 5

origin - annulus of zinn
insertion - medial anterioir surface of the eye in the sclera
innervation - occulomotor nerve
blood supply - ophthalmic artery
action - adducts the eye , moves the eye medially

Question 6

what are the anatomical characteristics of inferior rectus muscle ?

Answer 6

origin - annulus of inn
inferior - inferior anterior surface of the eye
innervation - occulomotor nerve
blood supply - ophthalmic artery
action - depress extorts , adducts the eye

Question 7

what are the anatomical characteristics of inferior muscle ?

Answer 7

origin - maxillary bone of the orbit 
insertion - inferioir lateral sclera 
innervation - occulomotor nerve 
blood supply - ophthalmic artery 
action - laterally rotates the eyes