Eye Neuro (Orbit)

Question 1

External surface of eyelid lined with ____, internal surface lined with_____

Answer 1

thin skin, conjunctiva

Question 2

chalazion

Answer 2

painless cyst caused by blockage of tarsal gland secretion

Question 3

stye

Answer 3

painful bacterial infection of sebaceous gland ducts of eyelashes

Question 4

aqueous humor is produced in ______ by the _______ and then drains into _______

Answer 4

posterior chamber, ciliary body, scleral venous sinus (canal of Schlemm)

Question 5

sphincter pupillae is in the ____, and is innervated by the ______

Answer 5

iris, parasymphathetic nervous system

Question 6

ciliary body contains the ____ which is innervated by the _______ and it also contains the _____

Answer 6

ciliary muscle, parasympathetic nervous system, suspensory ligament of the lens (zonular fibers)

Question 7

Eye accomodation is controlled by these 2 things which do these actions

Answer 7

ciliary muscle (contracts), suspensory ligaments (slacken)

Question 8

opthalmic veins drain into the ____ and the _____

Answer 8

cavernous sinus, pterygoid venous plexus

Question 9

levator palpebrae superioris inserts into ______ and is innervated by ______ and has the action of ______

Answer 9

superior tarsus, CN III (superior division), elevates upper eyelid

Question 10

CNIII innervates these muscles of the orbit

Answer 10

superior rectus (CNIII superior), inferior rectus (CNIII inferior division), medial rectus (CNIII inferior division)

Question 11

CNIII enters the orbit through the ____ superior orbital fissure and provides __________________ innnervation to sphincter pupillae and ciliary muscle

Answer 11

superior orbital fissure, preganglionic parasympathetic

Question 12

The trochlear nerve passes through the ______ and supplies _____ innervation to the superior oblique

Answer 12

superior orbital fissure, SE

Question 13

SA innervation of scalp and superior eyelid is _____ nerve and is a branch of the ______ nerve

Answer 13

supratrochlear, frontal

Question 14

the cutaneous branches of the ophthalmic nerve (CN V1) are:

Answer 14

lacrimal, supraorbital, supratrochlear, infratrochlear, external nasal (terminal branch of anterior ethmoidal)

Question 15

nerves of orbit from top to bottom (dorsal to ventral brain) are:

Answer 15

CN III, CN IV, CN VI, CN V1, CN V2

Question 16

actions of superior oblique

Answer 16

depression, slight abduction, strong intorsion

Question 17

Actions of inferior oblique:

Answer 17

elevation, slight abduction, strong extorsion

Question 18

Actions of superior rectus

Answer 18

strong elevation, slight adduction, intorsion

Question 19

inability to elevate abducted eye indicates:

Answer 19

damage to superior rectus function

Question 20

inability to depress an adducted eye indicates:

Answer 20

damage to superior oblique function

Question 21

What lesion is indicated in medial strabismus at the primary eye position?

Answer 21

abducens nerve lesion

Question 22

What lesion is indicated when the left eye drifts upward and outward?

Answer 22

trochlear nerve lesion

Question 23

what nerve lesion is indicated with ptosis, mydriasis, and an eye that drifts down and out?

Answer 23

oculomotor nerve lesion