The highest frequency sound is detected by
hair cells located near the oval window/stapes bone end of the basilar membrane
The hair cell of the cochlea is depolarized when the stereocilia are bent in any direction (True or False)?
False
Which mechanism causes hair cell depolarization as stereocilia bend in response to sound waves?
Tip links open ion channels, which causes membrane depolarization.
Movement of the cupula in the ampullae of the semicircular canals allows detection of
rotational movements.
An area of the retina that contains only cones and is the site of sharpest vision is the
fovea.
On a dark night, the rods have a high concentration of
cGMP.
______ cells connect photoreceptors to ganglion cells.
BIPOLAR
The photosensitive pigment synthesized from vitamin A is
retinal.
A decrease in the release of neurotransmitter from the photoreceptor would indicate a(n)
increase in light intensity.
The following steps occur in rods when they are excited by a photon of light. Place them in the correct sequence.
1. Membrane sodium channels close.
2. cGMP is broken down.
3. The membrane hyperpolarizes and the rate of neurotransmitter release declines.
5, 4, 2, 1, 3
Put these structures of the visual system in the order that they transmit light to the retina. 1. lens
2. aqueous humor
3. cornea
4. vitreous humor
3, 2, 1, 4