eye anatomy

Question 1

• lateral end of eye

- produces lacrimal fluid

Answer 1

lacrimal gland

Question 2

• drain lacrimal fluid

from eyes

Answer 2

Lacrimal canals

Question 3

provides passage of lacrimal fluid towards nasal cavity

Answer 3

lacrimal sac

Question 4

Muscles attached to the outer surface of the eye

Produce eye movements

Answer 4

extrinsic eye muscles

Question 5

moves eye laterally

Answer 5

lateral rectus

Question 6

moves eye medially

Answer 6

medial rectus

Question 7

elevates eye and rolls it medially

Answer 7

superior rectus

Question 8

, depresses eye and rotates it laterally

Answer 8

inferior rectus

Question 9

produce gross movement and allow the eye to follow a moving object

Answer 9

rectus muscles

Question 10

The wall is composed of three tunics

Answer 10

fibrous
vascular
nervous/sensory

Question 11

outermost tunic
Thick white connective tissue layer
Seen anteriorly as the “white of the eye”

Answer 11

sclera

Question 12

Transparent, central anterior portion
Allows for light to pass through
Most exposed part

Answer 12

cornea

Question 13

part of the fibrous tunic
Repairs itself easily
the only human tissue that can be transplanted without fear of rejection
When touched it will cause blinking and tearing of eyes

Answer 13

cornea

Question 14

Blood-rich nutritive tunic
Pigment prevents light from scattering
Modified anteriorly into two structures (ciliary body and iris)

Answer 14

vascular

Question 15

Pigmented layer that gives eye color

With circularly and radially arranged smooth muscles

Answer 15

iris

Question 16

– rounded opening in the iris

Answer 16

pupil

Question 17

Innermost tunic
Extends anteriorly to the ciliary body
Contains photoreceptor cells

Answer 17

sensory tunic retina

Question 18

Most are found towards the edges of the retina
Allow dim light vision and peripheral vision
Perception is all in gray tones

Answer 18

rods

Question 19

Allow for detailed color vision

Fovea centralis

Answer 19

cones

Question 20

area of the retina with only cones

- Area with great or sharpest vision

Answer 20

fovea centralis

Question 21

No photoreceptor cells are at the

Answer 21

optic disk, or blind spot

Question 22

Biconvex crystal-like structure

Held in place by a suspensory ligament attached to the ciliary body

Answer 22

lens

Question 23

Watery fluid found in chamber between the lens and cornea

Similar to blood plasma

Answer 23

aqueous humor

Question 24

Internal Eye Chamber Fluid
Helps maintain intraocular pressure
Provides nutrients for the lens and cornea

Answer 24

aqueous humor

Question 25

aqueous humor is Reabsorbed into venous blood through the

Answer 25

canal of Schlemm

Question 26

Gel-like substance behind the lens
Keeps the eye from collapsing
Lasts a lifetime and is not replaced

Answer 26

vitreous humor