BIO TEST 3-ch 12

whereas the sense of taste is based on ____ (how many?) classes of taste receptors, the sense of smell has over ___ (how many?) differenct receptors for chemicals associated with odor

5, 1000

chemoreceptors

allow a person to taste food

the loudness (intensity) of a sound is specifically associated with the

amplitude of the sound waves

which of the following can be corrected with corrective lenses

both myopia and hyperopia

which one of the following conditions results when the transparency of the lens decreases

cataracts

the transparent covering of the front of the eye is the

cornea

which of the following correctly traces the path of light through the eye

cornea, aqueous humor, pupil, lens, vitreous humor, retina

mechanoreceptors

detect light touch of skin

which of the following sequences represents the path by which sound waves travel through the ear

external aurditory canal, eardrum, oval window, cochlea

a ____ is the region of the eye where photoreceptors are most highly concentrated

fovea

during eye examination, a test is done to monitor the pressure within the eye. this test is done to detect

glaucoma

pain receptors adapt slowly or not at all because

lack of adaptation is important to survival

nearsightedness and farsightedness are caused by the

length of the eyeball

the ___ changes shape to focus light on the retina

lens

which of the following receptors are MOST likely to demonstrate receptor adaptation

olfactory response in the nose

what name is given to the opening that allows light into the interior of the eye?

pupil

photoreceptors

respond to light

pain receptors

responds to tissue damage, responds to immediate, extreme heat or cold

a more powerful stimulus will___

result in both activation of more receptors and more frequent action potentials

the photoreceptors of the eye are

rods and cones

what name is given to the tough layer that forms the "white" of the eye?

sclera

receptor adaptation results when____

sensory neuron stop sending action potentials

as humans age, their ability to focus on nearby objects deteriortes. this is a result of

stiffening of the lens and loss of accomodation capability

which of the following statesments about the human ear is true

the brain interprets input from different regions of the basilar membrane as different pitches

which of the following will regulate the amount of light entering the eye

the iris

which one of the following occurs when bright light hits the eye

the pupil decreases in size

receptors are classified according to

the type of stimulus energy they convert

T/F. sound waves that enter the human ear are transmitted in fluid only in the ear

true