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