vision

Question 0

blind spot test

Answer 0

the retina is incomplete where the optic nerve leaves the eye which cause a blind spot

Question 1

color blindness test

Answer 1

three or more incorrect responses indicates that your partner may have deficient color vision

Question 2

snellen visual activity test

Answer 2

20/20 vision test.

Question 3

located superior to the eye, they partially shade the eyes and protect them from sweat.

Answer 3

eyebrows

Question 4

located over the eye.

the eyelids blink to moisten the eye and sweep foreign substances from the eyes surface

Answer 4

eyelids

Question 5

located on the margin of the eyelids.

prevent foreign substances from entering the eye

Answer 5

eyelashes

Question 6

composed of lacrimal(or tear) gland and lacrimal ducts.

secretions or tears from the gland moisten the eye and washes away foreign substances

Answer 6

lacrimal apparatus

Question 7

an epithelial covering on the inside of the eyelid and the anterior surface of the eye.
helps keep the cornea moist and clean

Answer 7

conjuctiva

Question 8

the superior oblique rotates the inside of the eye downward and medially.
the inferior oblique rotates the eye upward and medially

Answer 8

oblique eye muscles

Question 9

the four muscles are the superior, inferior, medial, and lateral rectus muscles.
these muscles move the eye up, down, medially and laterally.

Answer 9

rectus eye muscles

Question 10

these are jelly-like fluids that fill the interior walls of the eye

Answer 10

aqueous and vitreous humours

Question 11

commonly called the WHITE OF THE EYE. a tough, tendon-like layer continuous with the dura mater of the brain around the optic nerve. it shapes the eye and is the insertion point for the six muscles which control eye movement

Answer 11

Sclera

Question 12

the most anterior layer of the eye that is continuous with the sclera.
transparent to allow light into the eye. well supplied with nerve endings for pain, reflex, blinking, and to stimulate lacrimal secretions.
it also lacks blood vessels

Answer 12

cornea

Question 13

separates the fibrous and sensory tunics
contains a dense capillary bed that provides oxygen and nourishment to the eye.
also contains many melanocytes

Answer 13

choroid

Question 14

lies just beneath the cornea.
this layer to which we attribute eye color.
composed of two layers of pupilary muscles that control the diameter of the pupil, and thus the amount of light entering the eye

Answer 14

iris

Question 15

this is the round central opening in the center of the eye

Answer 15

pupil

Question 16

a thick ring of tissue attached to and lies beneath the iris

Answer 16

ciliary body

Question 17

located beneath the iris and held in the center of the pupil by suspending ligaments extending from the ciliary body

Answer 17

lens

Question 18

the delicate, two innermost layer of the eye.

contains photoreceptors and neurons that react to light and transmit and integrate visual signals

Answer 18

retina

Question 19

photoreceptor cells very sensitive to light.

they enable us to see shades of gray in dim lights

Answer 19

rods

Question 20

photoreceptor cells responsible for high acuity color vision.
they only operate in bright lights
red 
green
blue

Answer 20

cones

Question 21

synapse with dendrites of rods and cones.

they transmit nerve impulses to the ganglion cells

Answer 21

bipolar neurons

Question 22

synapse with the axons of the bipolar neurons.

the axons combine to form optic nerve, which sends nerve impulses to the brain

Answer 22

ganglion cells

Question 23

where the optic nerve leave the eye. not covered by the retina.
a blind spot in the eye

Answer 23

optic disc

Question 24

cranial nerve II: it transmits visual information from the eye to the brain

Answer 24

optic nerve

Question 25

the portion of the retina that is responsible for sharp central vision. humans use this region for any activity that requires detailed vision, such as driving

Answer 25

fovea centralis