eye anatomy

Question 1

fibrous tunic

Answer 1

most superficial layer of eye. composed of sclera and cornea.

Question 2

sclera

Answer 2

whites of the eye. 5/6ths of the eye

Question 3

cornea

Answer 3

region of connective tissue anterior to sclera. A window.

Question 4

bulbar conjuctiva

Answer 4

epithelial lining on the cornea

Question 5

palpebral conjuctiva

Answer 5

epithelial lining on the eye lid. infection= pink eye.

Question 6

vascular tunic/ uvea

Answer 6

middle layer of eye split into three parts

Question 7

choroid layer

Answer 7

along fibrous tunic’s 2/3 posterior blood vessels with dark membrane.

Question 8

ciliary body

Answer 8

1/3 anterior side of the middle layer. 3 regions.

Question 9

ciliary processes

Answer 9

folded membrane secreting aqueous humor that is in the cornea.

Question 10

ciliary muscle

Answer 10

contracts and moves to shift lens for focus.

Question 11

ora serrata retinae

Answer 11

scalloped edge where ciliary body and retina meet.

Question 12

Iris

Answer 12

colored part. radial fibers that interact to control the amount of light allowed into the pupil

Question 13

neural tunic(retina)

Answer 13

three layers of photoreceptors-rods and cones, bipolar neurons, and ganglion neurons.

Question 14

rods

Answer 14

black and white vision in dim lighting. more sensitive than rods.

Question 15

cones

Answer 15

sharp vision and color

Question 16

optic disk/blind spot

Answer 16

where the optic nerves meet and exit out the the eye ball to the brain.

Question 17

macula densa and fovea centralis

Answer 17

highest abundancy in cones. sharpest vision.

Question 18

lens

Answer 18

flexible clear protein

Question 19

suspensory ligaments

Answer 19

clear ligaments that hold the lens in place

Question 20

anterior segment

Answer 20

between lens and inner surface of cornea. filled with aqueous humor.

Question 21

canal of schleem

Answer 21

tiny holes where aqueous humor drains out at the juction of sclera and cornea.

Question 22

posterior segment

Answer 22

between cornea and posterior of eyeball. filled with vitreous humor.

Question 23

palpebrae

Answer 23

eyelid

Question 24

palpebral fissure

Answer 24

edge that holds eyelashes

Question 25

lacrimal gland

Answer 25

on superior lateral edge of eye ball. produces tear solution to wash away dirt across the eye.

Question 26

lacrimal ducts

Answer 26

tears flow into inner corner of eyes. Then drained into nasolacrimal duct- pouch near nose that reabsorbs the tears.