A&P I - Section 14
damage to the left side of the brain near the visual cortex could result in which of the following visual changes?
loss of right visual fields from both eyes
oscillation of the eyes during the tracking of something in motion is called
nystagmus
What eye layer is referred to in the "Don't fire until you see the whites of their eyes"?
sclera
The correct pathway for impulses leaving the retina is
photoreceptors, bipolar cells, ganglion cells, and optic nerve
which of the following functions is carried out by both aqueous and vitreous humor?
refraction of light rays
sensory receptors for balance are found in the
semicircular canals
olfaction is the sense of
smell
which of the special senses contains receptor neurons that are the only nerve cells in direct contact with the outside environment?
smell
arrange the following to reflect the correct sequence an action potential would follow to reach the olfactory cortex of the brain: 1) olfactory bulb 2) olfactory cortex 3) olfactory epithelium 4) olfactory tract
3,1,4,2
what ion(s) cause(s) depolarization in olfactory neurons?
Both Na+ and Ca2+
which of the following is NOT a primary odor class?
Umami
which of the following is NOT an effect of aging on sense organs?
a large loss in the ability to detect odors
Cochlear neurons are stimulated by
bending microvilli or stereocilia on the hair cells.
mechanical deficiency in transmission of sound waves to the spiral organ is
conduction hearing loss
the anterior and posterior chambers of the eye are separated by
cornea
which of the following statements is true?
damaged olfactory neurons are replaced
the direction from which a sound is coming can be determined by the
differences in the time that sounds waves take to reach each ear
humans are able to distinguish several million shades of color because
different proportions of cone cells respond to each wavelength of light
the auditory tube
equalizes air pressure between the middle ear and outside air
taste buds are NOT associated with ____________ papillae
filiform
Albinism in which there is an absence of melanin pigment would affect the individual's ability to
have high levels of visual acuity and prevent scattering of light inside the eye
damage to vestibulocochlear nerve would result in some loss of
hearing and balance
Rapid changes in altitude can rupture the eardrum. Symptoms that may occur include
hearing impairment
Amanda has no visual impairments, but has noticed that in order to see clearly she must hold books farther from her face in order to read. What is happening to Amanda's vision?
her lens is becoming more rigid with age
which of the following is correctly matched?
iris-sphincter pupillae
color vision
is a function of cone cells
which of the following is false?
most of the optic tract axons terminate in the medial geniculate nucleus of the thalamus
Which of the following special senses experiences the least amount of decline as an individual ages?
olfactory
most neurons are permanent cells, however ________ are neurons that are constantly being replaced.
olfactory neurons
which of the following is NOT a feature of the retina?
optic chiasm
blood vessels enter the eye and the nerve processes exit the eye at the
optic disc
the sensory cells for hearing are located in the
organ of Corti or spinal organ
to which of the following substances would the taste buds be most sensitive?
quinine (tonic) water
which of the following definitions best describes the timbre of sounds?
resonance quality
which of the following statements is false?
sensitivity of taste buds for sweet taste is very high
the utricle and saccule are involved in
static balance
the olfactory cortex is located in the __________ lobe and the secondary olfactory areas are located in the _________ lobe.
temporal, frontal
the ability of the olfactory system to adapt to a particular odor may involve
the intermediate olfactory area sending inhibiting impulses to the olfactory bulb
which of the following cranial nerves would cause a person discomfort when getting dental work done?
trigeminal
The newest taste to be described is
umami
which of the following is a part of the bony labyrinth?
vestibule