The Senses Part 2

Question 1

“White of the eye”

Answer 1

Part of the front part of the sclera

Question 2

Part of the sclera referred to as the window of the eye

Answer 2

Cornea

Question 3

Inflammation of the cornea

Answer 3

Keratitis

Question 4

Cornea lies over what?

Answer 4

Iris

Question 5

What color is the cornea

Answer 5

Transparent

Question 6

Conjunctiva

Answer 6

A mucus membrane that lines the eyelids and covers the sclera in front

Question 7

Inflammation oft the conjunctiva

Answer 7

Conjunctivitis

Question 8

Conjunctivitis is generally caused by?

Answer 8

Bacterial or viral infections, allergies, or environmental factors

Question 9

What three layers of tissue form the eyeball?

Answer 9

Sclera, choroid, retina

Question 10

The conjunctiva is kept moist by tears formed in the?

Answer 10

Lacrimal gland

Question 11

Procedure that eliminates near sightedness by placing incisions around the cornea

Answer 11

Radial keratotomy

Question 12

Middle layer of the eyeball

Answer 12

Choroid

Question 13

What is the function of the choroid

Answer 13

Contains dark pigments that prevent the scattering of incoming light rays.

Question 14

Two involuntary muscles that make the outer layer of the choroid

Answer 14

Iris and ciliary muscle

Question 15

Black center of the iris that is a hole in the donut shaped muscle

Answer 15

Pupil

Question 16

When pupils dilate due to contracting of the iris, what happens to the pupil

Answer 16

The pupil dilates allowing more light into the eye

Question 17

Where does the lens of the eye lie?

Answer 17

Directly behind the pupil

Question 18

How is the lens of the eye held in place?

Answer 18

A ligament attached to the ciliary muscle

Question 19

When is the ciliary muscle relaxed causing the lense to be almost flat,

Answer 19

When we look at far away objects

Question 20

When the ciliary muscle contracts and causes curvature of the lens by pulling the choroid coat toward the lens, what distance are you looking

Answer 20

Near sighted

Question 21

Presbyopia

Answer 21

Old sightedness or loosing ones ability to see up close.

Question 22

Cataracts

Answer 22

Lens becomes hard, loses transparency, and becomes milky in color. This is caused by long term exposure to ultraviolet radiation.

Question 23

Inner most layer of the eyeball

Answer 23

Retina

Question 24

Name of photoreceptors cells in the retina

Answer 24

Rods and cones

Question 25

Receptors of night vision

Answer 25

Rods

Question 26

Receptors for daytime vision

Answer 26

Cones

Question 27

Three types of cones are sensitive to what colors

Answer 27

Red, green, and blue

Question 28

Yellowish area near the center of the retina

Answer 28

Macula lutea

Question 29

Fovea centralis

Answer 29

A small depression surrounded by the macula lutea which contains the greates amount of cones in the retina

Question 30

Name of the watery fluid in front of the lens

Answer 30

Aqueous humor

Question 31

Name of the jellylike fluid behind the lens

Answer 31

Vitreous humor

Question 32

When does glaucoma occur?

Answer 32

When the aqueous humor is blocked for any reason and the internal pressure of the eye can lead to damage and possible blindness

Question 33

Process of refraction

Answer 33

Occurs as light passes through the cornea, the aqueous humor, the lens, and the vitreous humor on the way to the retina

Question 34

Blind spot is know as the

Answer 34

Optic disc

Question 35

Why is the optic disc a blind spot?

Answer 35

No rods or cones are present where the optic nerve fiber exits

Question 36

Where is the visual cortex

Answer 36

Occipital lobe

Question 37

Nearsightedness is also referred to as?

Answer 37

Myopia

Question 38

Farsightedness is already referred to as

Answer 38

Hyperopia