LS 7C: Midterm 1 Test Questions
Solved Correct.
A drug selectively blocks Ca2+ channels at the axon terminus. The membrane potential at the
terminus will: - Answer not change
If you are able to change the resting membrane potential of a neuron from -70 to -80 mV, firing
an action potential in that neuron would be: - Answer harder
A mutation on the voltage gated potassium channels that renders them non-function will ___
the time an action potential normally takes to complete. - Answer increase
The membrane permeability to sodium at point 1 is ______ the membrane permeability at
point 0. - Answer higher than
The net movement of potassium across the membrane at point 5 is ______ compared to point
3. - Answer lower than
The number of sodium channels, available to open, not in refractory state, at point 0 is _____ at
point 5. - Answer greater than
A membrane that has no K+ leak channels would have a resting potential that is _____ what is
shown at point 0. - Answer higher than
A neuron that has spatially summed an EPSP and IPSP of equal values would most likely have a
membrane potential at the axon hillock that is ___ what is shown at point 0. - Answer equal
to
A neuron that received several IPSPs would have a membrane potential at the axon hillock that
is ____ what is shown at point 0. - Answer lower than
A neuron that is receiving many strong EPSPs will generate action potential with a peak
membrane potential that is ____ what is shown at point 3. - Answer same as
At the same time when the axon hillock receives several strong EPSPs, the membrane potential
at the axon terminus of a neuron will be _____ point 3. - Answer lower than
Slimfatty is a cholesterol based hormone that is produced by the hypothalamus to stimulate the
release of Thyroid releasing hormone, to control the metabolism through the thyroid hormone
Solved Correct.
A drug selectively blocks Ca2+ channels at the axon terminus. The membrane potential at the
terminus will: - Answer not change
If you are able to change the resting membrane potential of a neuron from -70 to -80 mV, firing
an action potential in that neuron would be: - Answer harder
A mutation on the voltage gated potassium channels that renders them non-function will ___
the time an action potential normally takes to complete. - Answer increase
The membrane permeability to sodium at point 1 is ______ the membrane permeability at
point 0. - Answer higher than
The net movement of potassium across the membrane at point 5 is ______ compared to point
3. - Answer lower than
The number of sodium channels, available to open, not in refractory state, at point 0 is _____ at
point 5. - Answer greater than
A membrane that has no K+ leak channels would have a resting potential that is _____ what is
shown at point 0. - Answer higher than
A neuron that has spatially summed an EPSP and IPSP of equal values would most likely have a
membrane potential at the axon hillock that is ___ what is shown at point 0. - Answer equal
to
A neuron that received several IPSPs would have a membrane potential at the axon hillock that
is ____ what is shown at point 0. - Answer lower than
A neuron that is receiving many strong EPSPs will generate action potential with a peak
membrane potential that is ____ what is shown at point 3. - Answer same as
At the same time when the axon hillock receives several strong EPSPs, the membrane potential
at the axon terminus of a neuron will be _____ point 3. - Answer lower than
Slimfatty is a cholesterol based hormone that is produced by the hypothalamus to stimulate the
release of Thyroid releasing hormone, to control the metabolism through the thyroid hormone
