The orbit

Question 1

Function of the fascial shealth?

Answer 1

envelopes eye and optic n.

Question 2

Function of check ligaments?

Answer 2

stabilize the eye

Question 3

function retrobulbar fat?

Answer 3

provides padding and resists posterior movement of the eye

Question 4

what is inophthalmos?

Answer 4

retraction of eyeball due to dehydration and retraction of retrobulbar fat

Question 5

what provides sensory innervation to the lacrimal gland??

Answer 5

opthalamic n. from trigeminal

Question 6

what provides parasympathetic innervation to the lacrimal gland?

Answer 6

greater pertrosal from fascial n.

Question 7

what provides sympathetic innervation to the lacrimal gland?

Answer 7

deep pertrosal n from internal carotid plexus

Question 8

describe the flow of tear production

Answer 8

parasympathetic sitmulation generates tear production within lacrimal gland, eyelid movement pushes tears to lacrimal punctum (the begining of the lacrimal canaliculi) lacrimal papilla drain the sac to nasolacrimal duct to nasal cavity to nasopharynx then swallowed

Question 9

Function of the levator palpebrae superioris?

Answer 9

keeps eyelids open

Question 10

what innervates the levator palpebrae superioris?

Answer 10

superior division of occulomotor

Question 11

function of the superior rectus?

Answer 11

pupils upward

Question 12

what innervates the superior rectus?

Answer 12

occulomotor n

Question 13

function of the inferior rectus?

Answer 13

pupils downward

Question 14

what innervates the inferior rectus?

Answer 14

occulomotor

Question 15

function of the medial rectus?

Answer 15

adduction of the pupil

Question 16

what innervates the medial rectus?

Answer 16

occulomotor

Question 17

what innervates the lateral rectus?

Answer 17

abducens n.

Question 18

function of the lateral rectus?

Answer 18

abduction of the pupil

Question 19

function of the superior oblique?

Answer 19

pupil downward, intorsion of eye

Question 20

what innervates the superior oblique?

Answer 20

trochlear n

Question 21

function of the inferior oblique?

Answer 21

pupil upward, extorsion of the eye

Question 22

innervation of the inferior oblique?

Answer 22

occulomotor

Question 23

where does the opthalamic a branch from?

Answer 23

internal carotid

Question 24

clinical application of central a. of retina?

Answer 24

injury will lead to blindness as supply to retina will be cut off

Question 25

two functions of the cillary ganglion?

Answer 25

acts on the pupils to constrict for light (directly and consensually) and contracts the lens to focus on image

Question 26

is the cilliary ganglion sympathetic or parasympathetic in nature?

Answer 26

parasympathetic