The flashcards below were created by user
TheseFights
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Olfactory information is first received by which part of the brain?
cerebrum
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A normal, relaxed inhalation carries about ________ of the inhaled air to the olfactory organs.
2 percent
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Olfactory receptors send axons through the cribriform plate. They synapse on neurons in the
olfactory bulb
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Gustatory receptors are located
on the surface of the tongue
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What lingual papillae has the largest number of taste buds?
circumvallate papillae
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Stimulation of nociceptive receptors within the trigeminal nerve might produce a perception of
peppery hot
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What structure changes the shape of the lens for far and near vision?
ciliary body
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The palpebrae are connected at the
lateral and medial canthus
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A structure that is located at the medial canthus and contains glands that contribute to a gritty deposit is the
lacrimal caruncle
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The ________ covers most of the exposed surface of the eye.
conjunctiva
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The opening in the iris through which light passes is the
pupil
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A ray of light entering the eye will encounter these structures in which order?
conjunctiva → cornea → aqueous humor → lens → vitreous body → retina → choroid
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Pupillary muscle groups are controlled by the ANS. Parasympathetic activation causes pupillary ________, and sympathetic activation causes ________.
constriction; dilation
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Why must accommodation occur to view objects closer than 20 feet from the eye?
The light rays are divergent instead of parallel and require more refraction
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The optic disc is a blind spot because
there are no photoreceptors in that area
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An elongate outer segment containing membranous discs and a narrow connecting stalk that attaches the outer segment to the inner segment describes
a photoreceptor
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The first step in the process of photoreception is
absorption of a photon by a visual pigment
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Where are the visual pigments located in the rods and cones?
inside membrane discs stacked in the outer segment
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Which of these anatomical sequences is correct?
tympanum - malleus - incus - stapes - oval window - round window
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The ________ ear collects sounds waves and transmits them to the ________ ear, which contains auditory ossicles
outer; middle
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The frequency of a perceived sound depends on
which part of the cochlear duct is stimulated
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An infection that damages the vestibular nerve could result in a loss of
equilibrium
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The structure attached to the oval window that transmits vibrations from the tympanic membrane to the inner ear is the
stapes
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The superficial hard part of the inner ear is called the ________ and contains ________ .
bony labyrinth; perilymph
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The sensory receptors of the semicircular canals are located in the
ampullae
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The structure that supports the organ of Corti is the
basilar membrane
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The vibrations received by the tympanic membrane are transferred to the oval window by the
auditory ossicles
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What are stapes?
seals the oval window
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