#1) during the rising phase of an action potential, incoming na+:
a)inactivates na+ cha...
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Biology, 21.01.2020 03:31, leothedrifter
#1) during the rising phase of an action potential, incoming na+:
a)inactivates na+ channels.
b)hyperpolarizes the cell
c)depolarizes the cell.
d)often causes the membrane potential to "overshoot", going above 0 mv.
#2)
during the early portion of the falling phase of an action potential (ie: right after the "peak" of the ap), na+ channels:
a)are closed
b) are inactivated
c) permit na+ ions into the neuron.
d)
do not permit na+ ions into the neuron.
#3)
the refractory period goes from "absolute" to "relative" when:
the inactivation gate of na+ channels opens up.
the inactivation gate of na+ channels closes.
k+ channels begin to open.
k+ channels begin to close.
#4)
during the relative refractory period:
k+ channels are open.
na+ channels are inactivated.
it is impossible to fire a subsequent action potential.
it is more difficult, but possible, to elicit another action potential.
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