Week 4 PEQ (Muscle physiology - VPHY exam 2)
with complete solutions
1. When compared to the leg muscles of
an Olympic sprinter, the muscles of False
an Olympic marathoner would likely --> comparing a sprinter to a
show a marathoner. sprint = fast-twitch
lower proportion of oxidative slow-
twitch fibers. marathon = slow-twitch
T/F marathoner would likely show a
HIGHER proportion of oxidative slow
2. When a low frequency sound enters
the cochlea, the stereocilia of hair cells twitch fibers
closer to the base of the basilar
membrane hyperpolarize causing voltage-gated
calci- um channels to not
openterm-8
--> low frequency stimulates the apex of
the
- bend toward the kinocilium and cause the basilar membrane.
release of neurotransmitters. What will most likely
- hyperpolarize causing voltage-gated happen as a conse-
cal- cium channels to not open.
- bend away from the kinocilium and
cause the release of
neurotransmitters.
- depolarize causing voltage-gated
calcium channels to open.
3. You turn on a light so you can get a
glass of water. AFTER you turn on the
light, your bipolar cells are .
- None of the above. (Bipolar cells do
not have membrane potentials)
- hyperpolarized
- depolarized
4. Suppose the stereocilia of one hair
cell become permanently bent away
from the kinocilium.
1/
8
, Week 4 PEQ (Muscle physiology - VPHY exam 2)
with complete solutions
the voltage-gated calcium channels at the base would
hyperpolarize and not open since the apex is the one that is
stimulated
depolarized
--> refer to diagram.
w light the rods and cones are hyperpolar- ized, and then the
bipolar cells do the oppo- site, depolarize
A single pitch will no longer be perceivable depending on the
hair cell's location
--> it is only one hair cell that is damaged, so it is a single
pitch.
it is bent away from the kinocilium, so the
2/
8
with complete solutions
1. When compared to the leg muscles of
an Olympic sprinter, the muscles of False
an Olympic marathoner would likely --> comparing a sprinter to a
show a marathoner. sprint = fast-twitch
lower proportion of oxidative slow-
twitch fibers. marathon = slow-twitch
T/F marathoner would likely show a
HIGHER proportion of oxidative slow
2. When a low frequency sound enters
the cochlea, the stereocilia of hair cells twitch fibers
closer to the base of the basilar
membrane hyperpolarize causing voltage-gated
calci- um channels to not
openterm-8
--> low frequency stimulates the apex of
the
- bend toward the kinocilium and cause the basilar membrane.
release of neurotransmitters. What will most likely
- hyperpolarize causing voltage-gated happen as a conse-
cal- cium channels to not open.
- bend away from the kinocilium and
cause the release of
neurotransmitters.
- depolarize causing voltage-gated
calcium channels to open.
3. You turn on a light so you can get a
glass of water. AFTER you turn on the
light, your bipolar cells are .
- None of the above. (Bipolar cells do
not have membrane potentials)
- hyperpolarized
- depolarized
4. Suppose the stereocilia of one hair
cell become permanently bent away
from the kinocilium.
1/
8
, Week 4 PEQ (Muscle physiology - VPHY exam 2)
with complete solutions
the voltage-gated calcium channels at the base would
hyperpolarize and not open since the apex is the one that is
stimulated
depolarized
--> refer to diagram.
w light the rods and cones are hyperpolar- ized, and then the
bipolar cells do the oppo- site, depolarize
A single pitch will no longer be perceivable depending on the
hair cell's location
--> it is only one hair cell that is damaged, so it is a single
pitch.
it is bent away from the kinocilium, so the
2/
8
