Anatomy: Eye:Special Sensory Exercises

Question 1

function of the lacrimal apparatus

Answer 1

consists of lacrimal gland , lacrimal canaliculi, lacrimal sac , and nasolacrimal duct

Question 2

Function of the lacrimal gland

Answer 2

The release tears that flow onto the anterior surface of the eye ball through several ducts.

Question 3

lateral recutus

Answer 3

moves eye laterally

Question 4

medial rectus

Answer 4

moves eye medially

Question 5

inferior rectus

Answer 5

depresses eye and turns eye medially

Question 6

superior rectus

Answer 6

elevates and and turns it medially

Question 7

superior oblique

Answer 7

depresses eye and turns it laterally

Question 8

inferior oblique

Answer 8

depresses eye and turns it medially

Question 9

list the 3 layers of the eyeball

Answer 9

fiberous , vascular , inner layer

Question 10

sclera

Answer 10

the white of the eye, forms the bulk of the fiberous layer

Question 11

cornea

Answer 11

it is transparent , light enters through here

Question 12

2 portions of the fiberous layer

Answer 12

sclera , cornea

Question 13

4 parts of the vascular layer

Answer 13

choroid
cilliary body
iris
pupil

Question 14

function of the choroid

Answer 14

it prevents light from scattering within the eye , it is a blood rich nutritive region .

Question 15

what is the function of the pigmented layer of the retina

Answer 15

it prevents light from scattering in the eye. also function in photoreceptor cell renewal by acting as phagocytes. They also store vitamin a

Question 16

name the 3 neuron types in the neural layer of the retina

Answer 16

rods, cones, photoreceptors

Question 17

what does the anterior segment contain

Answer 17

the aqeous humor

Question 18

what does the posterior segement contain

Answer 18

the vitrous humor

Question 19

what does refracted mean

Answer 19

the light is bent

Question 20

what is myopia

Answer 20

nearsightedness , this means that the image normally focuses in front of the retina

Question 21

what is hyperopia

Answer 21

the image focuses behind the retina . This is farsightedness

Question 22

what does astigmatism mean

Answer 22

irregularities in the curvature of the lens that lead to blurred vision

Question 23

what does presbyopia mean

Answer 23

the elasticity of the lens decreases, this is due to old age

Question 24

what is near point accomidation

Answer 24

it is a test for presbyopia, it is closer in children and further for adults

Question 25

what is the blind spot

Answer 25

it is also known as the optic disc, it is where there are no photoreceptors . It is where the optic nerve leaves the eyeball

Question 26

what is accomidation

Answer 26

the ability of the eye to focus differentially for objects of near vision