Depolarization is caused by:
K+ diffusing out of the neuron
K+ being pumped out of the neuron
Na+...
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Medical Sciences
Depolarization is caused by:
K+ diffusing out of the neuron
K+ being pumped out of the neuron
Na+ being pumped into the neuron
Na+ diffusing into the neuron
Hyperpolarization:
can be caused after neurotransmitters bind to postsynapticneurons
means the neuron’s internal environment is even more positivelycharged than usual
can be caused by sodium ion gated channels being open
each of the above is correct
Typically, an unmyelinated small diameter axon would have:
a faster speed of action potential transmission than amyelinated small diameter axon
a slower speed of action potential transmission than anunmyelinated large diameter axon
the same speed of action potential transmission as anunmyelinated large diameter axon
none of the above is correct
Several neurons each releasing a subthreshold level ofneurotransmitter, all at one time, leading to an action potentialin a postsynaptic neuron is an example of:
hyperpolarization
spatial summation
temporal summation
none of the above is correct
Depolarization causes:
the interior side of the membrane to become more negative
voltage-gated sodium ion channels further down the axon toopen
Na+/K+ pumps that were not working, to now start working
each of the above is correct
Answer & Explanation
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4.5 Ratings (996 Votes)
1st part correct answer is caused by sodium pumped into the neuron In depolarization sodium ions are actively transported into the neuron by sodium channel Diffusion does not take place 2nd part Hyperpolarization is caused after
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