Navigation » List of Schools » Prince George Community College » Biology » Bio 2050 – Anatomy and Physiology » Spring 2021 » Neurophysiology
Below are the questions for the exam with the choices of answers:
Question #1
A potassium enters, repolarizing the cell to a positive value.
B potassium exits, depolarizing the cell to an even more negative value.
C potassium exits, repolarizing the cell to a negative value.
D potassium enters, repolarizing the cell to a negative value.
E potassium enters, depolarizing the cell to a positive value.
Question #2
A a hill where the high point is the farthest away from the threshold value.
B a valley where the low point is the farthest away from the threshold value.
C a valley where the low point approaches the threshold value.
D a hill where the high point approaches the threshold value.
Question #3
A opening of chemically gated calcium channels and diffusion of calcium into the synaptic knob.
B opening of chemically gated calcium channels and diffusion of calcium out of the synaptic knob to the interstitial fluid.
C opening of voltage-gated calcium channels and diffusion of calcium into the synaptic knob.
D closure of voltage-gated calcium channels in the synaptic knob membrane.
E opening of voltage-gated calcium channels and diffusion of calcium out of the synaptic knob to the interstitial fluid.
Question #4
A EPSP.
B IPSP.
Question #5
A FALSE
B TRUE
Question #6
A TRUE
B FALSE
Question #7
A suprathreshold hyperpolarization.
B several action potentials.
C spatial summation.
D temporal summation.
Question #8
A C fibers, and they conduct impulses at 100 meters per second.
B A fibers, and they conduct impulses at 10 meters per second.
C D fibers, and they conduct impulses at 0.1 meter per second.
D C fibers, and they conduct impulses at 1 meter per second.
E D fibers, and they conduct impulses at 0.01 meter per second.
Question #9
A myelinated regions.
B neurofibril nodes.
Question #10
A temporal summation.
B facilitation.
C recruitment.
D spatial summation.
E presynaptic potentiation.
Question #11
A lasts for several seconds after ion channels have opened, closed, and reset.
B varies in size depending on the magnitude of the stimulus (larger voltage change for stronger stimulus).
C is all or none (always the same intensity).
D travels the length of the nerve fiber (is long-distance).
Question #12
A Relative refractory period
B Absolute refractory period
Question #13
A one electrode inside the cell and another outside the body.
B one microelectrode inside the neuron and another in the interstitial fluid.
C two electrodes inside the neuron.
D one electrode inside the cell and another inside another cell.
Question #14
A voltage-gated channels.
B sodium-potassium pumps.
C chemically gated channels.
D mechanically gated channels.
Question #15
A reuptake by the presynaptic cell.
B uptake by the postsynaptic cell.
C being engulfed by a supporting glial cell.
D degradation by an enzyme.
Question #16
A either the entry of a cation or the exit of an anion.
B the entrance of either sodium or potassium.
C the entry of any ion.
D either the entry of an anion or the exit of a cation.
Question #17
A chemically, dendrite
B chemically, axon
C voltage-, dendrite
D voltage-, axon
Question #18
A directly related to voltage and inversely related to resistance.
B inversely related to both voltage and resistance.
C indirectly related to voltage and directly related to resistance.
D directly related to both voltage and resistance.
Question #19
A reuptake by the presynaptic cell.
B dendritic lassos.
C endocytosis by the postsynaptic cell.
D phagocytosis by a macrophage.
Question #20
A their inactivated state to their resting state.
B their resting state to their inactivated state.
C their activated state to their resting state.
D their resting state to their activated state.