Ch 17 Test

Question 1

The normal adjustment of the lens to bring an object into focus for near vision on the retina is

Answer 1

Accommodation

Question 2

A yellowish region on the retina lateral to the optic disc is the

Answer 2

Macula

Question 3

The tiny pit or depression in the retina that is the region of clearest vision is the

Answer 3

Fovea centralis

Question 4

The bending of light rays by the cornea, lens, and fluids of the eye is

Answer 4

Refraction

Question 5

The point at which the fibers of the optic nerve cross in the brain is the

Answer 5

Optic chiasm

Question 6

The photoreceptor cell in the retina that make the perception of color possible are the

Answer 6

Cones

Question 7

The photoreceptor cells in the retina that make vision in dim light possible

Answer 7

Rods

Question 8

The _______ is the area behind the cornea and in front of the lens and iris. Contains aqueous humor

Answer 8

Anterior chamber

Question 9

The posterior, inner part of the eye is the

Answer 9

Fundus

Question 10

Open center of the iris through which light rays enter

Answer 10

Pupil

Question 11

Delicate membrane lining the eyelids and covering the anterior eyeball

Answer 11

Conjunctiva

Question 12

Fibrous layer of clear tissue that extends over the anterior portion of the eyeball

Answer 12

Cornea

Question 13

Vascular layer of the eyeball that is continuous with the iris

Answer 13

Choroid

Question 14

Colored portion of the eye;surrounds pupil

Answer 14

Iris

Question 15

Contains muscles that control the shape of the lens and secretes aqueous humor

Answer 15

Ciliary body

Question 16

Transparent structure behind the iris and in front of the vitreous humor

Answer 16

Lens

Question 17

Contains sensitive cells called rods and cones that transform light energy into nerve impulses

Answer 17

Retina

Question 18

Jelly-like material behind the lens that helps maintain the shape of the eyeball

Answer 18

Vitreous humor

Question 19

Inflammation of an eyelid

Answer 19

Blepharitis

Question 20

Inflammation of the conjunctiva

Answer 20

Conjunctivitis

Question 21

Inflammation of a tear gland

Answer 21

Dacryoadenitis

Question 22

Inflammation of the iris

Answer 22

Iritis

Question 23

Inflammation of the cornea

Answer 23

Keratitis

Question 24

Inflammation of the white of the eye

Answer 24

Scleritis

Question 25

Inflammation of the retina

Answer 25

Retinitis

Question 26

Prolapse of the eyelid

Answer 26

Blepharoptosis

Question 27

Pertaining to tears

Answer 27

Lacrimal

Question 28

Pertaining to within the eye

Answer 28

Intraocular

Question 29

Amblyopia

Answer 29

Decreased vision

Question 30

Hyperopia

Answer 30

Farsighted

Question 31

Presbyopia

Answer 31

Decreased Vision due to old age

Question 32

Myopia

Answer 32

Nearsighted

Question 33

Nyctalopia

Answer 33

Night blindness

Question 34

Diplopia

Answer 34

Double vision

Question 35

Astigmatism

Answer 35

Defective cornea

Question 36

The region at the back of the eye where the optic nerve meets the retina is the

Answer 36

Optic disc

Question 37

Ultrasonic vibrations break up the lens, and it is aspirated from the eye

Answer 37

Phacoemulsification

Question 38

Test of clearness of vision

Answer 38

Visual acuity test

Question 39

OU

Answer 39

Both eyes

Question 40

VA

Answer 40

Visual acuity test

Question 41

Labyrinth

Answer 41

Cochlea and canals

Question 42

Semicircular canals

Answer 42

Organ of equilibrium in the inner ear

Question 43

Auditory tube

Answer 43

Connects middle ear and throat

Question 44

Stapes

Answer 44

Third ossicle

Question 45

Organ of corti

Answer 45

Region in the cochlea that contains auditory receptors

Question 46

Perilymph and endolymph

Answer 46

Fluid within ear

Question 47

Cerumen

Answer 47

Ear wax

Question 48

Tympanic membrane

Answer 48

Eardrum

Question 49

Instrument to examine the ear

Answer 49

Otoscope

Question 50

Removal of the third bone of the middle ear

Answer 50

Stapedectomy

Question 51

Pertaining to the auditory tube and throat

Answer 51

Salpingopharyngeal

Question 52

Flow of pus from the ear

Answer 52

Otopyorrhea

Question 53

Instrument to measure hearing

Answer 53

Audiometer

Question 54

Incision of the eardrum

Answer 54

Myringotomy

Question 55

Surgical repair of the eardrum

Answer 55

Tympanoplasty

Question 56

Small ear

Answer 56

Microtia

Question 57

Inflammation of the middle ear

Answer 57

Otitismedia