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