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49 terms

Chapter 15 Senses

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Which of the following types of neurons are replaced throughout adult life?
olfactory receptor cells
The oil component found in tear is produced by the ______.
tarsal glands
The receptor for static equilibrium is the ______.
macula
Farsightedness is more properly called______.
hyperopia
Seventy percent of all sensory receptors are located in the ______.
pharyngotympanic tube
Nerve fibers from the medial aspect of each eye________.
cross over to the opposite side at the chiasma
Ordinarily, it is not possible to transplant tissues from one person to another, yet corneas can be transplanted without tissue rejection. This is because the cornea _____.
has no blood supply
The oval window is connected directly to which passageway?
scala vesitbuli
There are three layers of neurons in the retina. The axons of which of these neurons layers form the optic nerves?
ganglion cells
The "first way" station in the visual pathway from the eye, after there has been partial crossover of the fibers in the optic chiasma, is the _______.
lateral geniculate body of the thalamus
As sound levels increase in the spiral organ (of Corti), ___________.
outer hair cells stiffen the basilialr membrane
Which of the following is true about gustatory receptor.?
Complete adaptation occurs in about on to five minutes.
Taste buds are not found ______.
in filiform papillae
Select the correct statement about olfaction.
Some of the sensation of olfaction is actually one of pain
What prevents the eyelids from sticking together when the eyes close?
tarsal gland secretions
Which of the following taste sensations is incorrectly matched to the chemicals that produce it?
umami amino acids glutamate and lysine
U.S.employees must wear hearing protection at _____ dB or above.
90
What is a modiolus?
a bone pillar in the center of the cochlea
Which statement about malnutrition- induced night blindness is most accurate.
Vitami supplements can reverse degenerative changes.
Dark adaptation ________.
involves accumulatin of rhodopsin
Conscious perception of vision probably reflects activity in the ______.
occipital lobe of the cortex
Visual inputs to the ______ serve to synchronize biorhythms with natural light and dark.
suprachiasmatic nucleus
Information from balance receptors goes directly to the ______.
brain stem reflex center
motion sickness seems to ______.
result from mismatch between visual and vestibular inputs
In the uterus _______.
despinte the fact that the fetus cannot se, functional visual cortical connections are established.
Most newborns_______.
often use only one eye at a time.
The blind spot of the eye is where _______.
the optic nerve leaves the eye
The first vestigs of eyes in the embryo are called ______.
optic vessels
Whch pairing of terms is incorrectly related?
frequency : loudness
Olfactory cells and taste buds are normally stimulated by ______.
substances in solution
Which of the following could not be seen as one looks into the eye with an ophthalmascope?
optic chiasma
The cells of the retina in which action potenentials are generated are the_______.
ganglion cells
During dark adaption_______.
rhodopsin accumulates in the rods
Tinnitis, vertigo and gradual hearing loss typify the disorder called ______.
Me'nie're's syndrome
Which of the following is not a characteristic of olfactory receptor cells?
They are unipolar neurons
An essential part of the maculae involved in static equilibious are the.
otoliths
Which of the following is true about light and vision?
When we see the color of an object, all light is being absorbed by that object excpet for the color being experienced
The tarsal plate of the eyelid.
is connected to the levator palpebrae
Whch of the following is true about photoreceptors?
Rods absorb light throughout the visual spectrum but confer only gray tone vision.
Select the correct statement about equilibrium.
Cristae respond to angular addeleration and deceleration
The eye muscles that elevates and turns the eye lateralrlly is the ______?
inferior oblique
The receptor membranes of gustatory cells are ________.
Gustatory hairs
Light passes through the following structures in what order?
conrea, aqueus humor, lens viruous humor (CALV)
Damage to the medial recti muscles would affect _______.
convergance
Whch statement about sound localization is not true:
it requires processing a the cortical level
Whcih of the following is not a possible cause of conductions deafness?
cochlear nerve degeneration
Visual processing in the thalamus does not contribute significantly to _____.
night vision
Visible light fits between ______..
UV and infared
Ceruminous glands are _______.
modified apocrine sweat glands