Ch 17 Textbook Quiz (Special Senses)

Question 1

olfactory receptors are examples of

Answer 1

chemoreceptors

Question 2

what is not a primary taste sensation: sweet, salty, pungent, bitter

Answer 2

pungent

Question 3

sensory stimulation to the posterior 1/2 of the tongue is conducted by the

Answer 3

glossopharyngeal nerve

Question 4

circumvallate papillae are located on the

Answer 4

posterior region of the tongue

Question 5

bipolar neurons associated with sensory receptors are found in the

Answer 5

retina

Question 6

what is part of the vascular tunic of the eye: cornea, retina, choroid, sclera

Answer 6

choroid

Question 7

when entering a dark room on a sunny day, it takes some time to be able to see because

Answer 7

it takes time for the retina to rebuild its rhodopsin

Question 8

the anterior cavity contains

Answer 8

aqueous humor

Question 9

the point of greatest visual acuity is the

Answer 9

central fovea

Question 10

intraocular pressure is primarily due to the

Answer 10

aqueous humor

Question 11

as they extend from the retina to the brain, nerve fibers

Answer 11

from the nasal half of each retina cross to reach the opposite visual cortex

Question 12

what cranial nerve carries visual impulses to the brain

Answer 12

II

Question 13

aqueous humor drains from the anterior chamber into

Answer 13

canal of Schlemm

Question 14

as a result of injury, a person cannot see at all with the left eye, but has no trouble seeing with the right eye. The injury has probably severed the

Answer 14

right optic nerve

Question 15

the blind spot is the area where

Answer 15

the optic nerve exits the eye

Question 16

a sty is caused by

Answer 16

infection of the sebaceous ciliary glands

Question 17

which of the following conditions is not related to lens pathology: glaucoma, hypermetropia, cataract, astigmatism

Answer 17

glaucoma

Question 18

In humans, both eyes focus on only one set of objects. This is called

Answer 18

binocular vision

Question 19

the fibrous tunic is composed of the

Answer 19

sclera and cornea

Question 19

the white of the eye, which gives shape to the eyeball, makes it more rigid, and protects its inner parts is the

Answer 19

sclera

Question 20

most of the refraction of light entering the eye occurs at the

Answer 20

cornea

Question 21

during accomodation for near vision

Answer 21

the lens increases in curvature

Question 22

constriction of the pupil is brought about by contraction of the

Answer 22

circular muscle of the iris

Question 23

photopigment in the rods and cones is imbedded in the

Answer 23

membrane folds of the outer segment of these cells

Question 24

the most common type of color blindness is

Answer 24

red-green color blindness

Question 25

in daylight, rods contribute little to vision because

Answer 25

the rhodopsin is bleached as fast as it is regenerated

Question 26

when light hits the rods

Answer 26

Na+ channels close and less inhibitory neurotransmitter is released

Question 27

function of the eyelid

Answer 27

shade the eye during sleep, protect the eye from excessive light and foreign objects

Question 28

the external auditory meatus passes through the

Answer 28

temporal bone

Question 29

what structure helps maintain proper air pressure in the middle ear

Answer 29

Eustachian tube

Question 30

Endolymph is found within the

Answer 30

cochlear duct

Question 31

what generates a receptor potential in hair cells

Answer 31

bending of stereocilia

Question 32

the round window connects to the

Answer 32

scala tympani

Question 33

nerve fibers that synapse with hair cells in the organ of Corti unite to form part of the __ nerve

Answer 33

optic

Question 34

what is the correct pathway leading to perception of sound

Answer 34

tympanic membrane, ossicles, perilymph, endolymph, hair cells

Question 35

what is associated with equilibrium

Answer 35

otolithic membrane

Question 36

otoliths are

Answer 36

crystals

Question 37

each crista in the semicircular ducts is covered by a gelatinous material called the

Answer 37

cupula

Question 38

sound waves are translated into nerve impulses in the

Answer 38

cochlea

Question 39

a reflex reaction to loud sounds prevents damage to the inner ear. This reaction is due to contraction of

Answer 39

tensor tympani and stapedius muscles

Question 40

the oval window connects to the

Answer 40

stapes

Question 41

pitch is

Answer 41

the frequency of a sound vibration

Question 42

perilymph fills the

Answer 42

bony labryinth

Question 43

the neural receptors for the sense of hearing are located in the

Answer 43

inner ear

Question 44

high intensity (loud) sounds can cause deafness because they are most damaging to the

Answer 44

hair cells of the spiral organ of Cortin

Question 45

Meniere’s syndrome is caused by

Answer 45

increased amount of endolymph that enlarges the membranous labryinth