unit 8: special senses, eye (2)

Question 1

most anterior, primary refractory structure of the eye

Answer 1

cornea

Question 2

AQUEOUS HUMOR is a clear fluid secreted by the __ __ INTO the ___ chamber, found on the posterior aspect of ciliary body
-part of anterior segment posterior to iris

Answer 2

ciliary processes

posterior

Question 3

aqueous humor passes thru the ___ into the ANT chamber and then travels laterally, leaving the eyeball thru the __ __ __

Answer 3

pupil

scleral venous sinus

Question 4

___ results from increased pressure w/i the anterior segment of eyeball, and sometimes blindness

Answer 4

glaucoma

Question 5

transparent, biconvex, avascular refractory component of the eyeball that separates the anterior segment from the posterior segment
-increased convexity of it allows for near vision

Answer 5

lens

Question 6

____ occurs bc lens gets harder with age, resulting in more difficult NEAR vision

Answer 6

presbyiopia

Question 7

____ occur as the lens becomes less and less transparent

Answer 7

cataracts

Question 8

refractory component that fills posterior segment and is gelatinous and transparent

Answer 8

vitreous body

Question 9

vestigial structure connecting the optic nerve and post aspect of lens
-no function in adult, but once contained fetal hyaloid artery

Answer 9

hyaloid canal

Question 10

tarsal glands, 6 extraocular muscles, and lacrimal apparatus are all ___ structures of the eye

Answer 10

accessory

Question 11

___ ___ are located superolaterally to eye and secrete tears that are carried to eye surface by excretory ducts

Answer 11

lacrmal glands

Question 12

__ __ are found in each eyelid below and medial to eyeball, and drain tears into the lacrimal ___

Answer 12

lacrimal glands

sac

Question 13

__ __ is found in a groove bt the lacrimal bone and maxilla and is the most superior part of the nasolacrimal duct

Answer 13

lacrimal sacs

Question 14

nasolacrimal duct drains tears from the __ __ into the __ __ __

Answer 14

lacrimal sac

inferior nasal meatus

Question 15

tears flow __ to __

Answer 15

lateral

medial

Question 16

__ __ are located in each eyelid and are modified sebaceous glands that secrete an oily substance that covers tears upon blinking
-reduces evaporation of tears

Answer 16

tarsal glands

Question 17

all arteries to eyeball are branches of the ___ artery

Answer 17

ophthalmic

Question 18

there is one __ __ __ artery on each side (med/lat) running bt sclera and choroid, and 6-12 __ __ arteries that enter the eyeball on the posterior surface forming a ring around the __ __

Answer 18

long posterior ciliary
short ciliary
optic nerve

Question 19

there are 6-8 __ __ arteries that arch over or under the eyeball (3-4 each way)

Answer 19

anterior ciliary

Question 20

__ __ artery travels via the optic nerve to the retina where it spreads outinto an extensive network
-ONLY artery supplying the RETINA*

Answer 20

central retinal

Question 21

anterior ciliary veins, long posterior ciliary veins, central retinal vein all travel alongside the ___ of the same names

Answer 21

arteries

Question 22

branches of the __ nerve of the ophthalmic division of trigeminal supply the eyeball, including the __ __ nerves and __ __ nerves

Answer 22

nasociliary
long ciliary
short ciliary

Question 23

the long ciliary nerves are sensory to the (3):

Answer 23

ciliary body
iris
cornea

Question 24

postganglionic SYMP fibers from cavernous plexus pass thru the __ ganglion and reach the __ and __ pupillae muscles

Answer 24

ciliary
ciliaris
dilator

Question 25

postganglionic PARA fibers from ___ ganglion also follow similar path to ciliaris and ___ __ muscles

Answer 25

ciliary

sphincter pupillae