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 enters, depolarizing the cell to a positive value.
C potassium exits, repolarizing the cell to a negative value.
D potassium exits, depolarizing the cell to an even more negative value.
E potassium enters, repolarizing the cell to a negative value.
Question #2
A a hill where the high point approaches the threshold value.
B a hill where the high point is the farthest away from the threshold value.
C a valley where the low 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 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 closure of voltage-gated calcium channels in the synaptic knob membrane.
D opening of voltage-gated calcium channels and diffusion of calcium into the synaptic knob.
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 TRUE
B FALSE
Question #6
A FALSE
B TRUE
Question #7
A suprathreshold hyperpolarization.
B several action potentials.
C temporal summation.
D spatial summation.
Question #8
A D fibers, and they conduct impulses at 0.01 meter per second.
B C fibers, and they conduct impulses at 100 meters per second.
C A fibers, and they conduct impulses at 10 meters 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 myelinated regions.
B neurofibril nodes.
Question #10
A recruitment.
B temporal summation.
C presynaptic potentiation.
D facilitation.
E spatial summation.
Question #11
A lasts for several seconds after ion channels have opened, closed, and reset.
B travels the length of the nerve fiber (is long-distance).
C is all or none (always the same intensity).
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 outside the body.
B two electrodes inside the neuron.
C one microelectrode inside the neuron and another in the interstitial fluid.
D one electrode inside the cell and another inside another cell.
Question #14
A voltage-gated channels.
B mechanically gated channels.
C sodium-potassium pumps.
D chemically gated channels.
Question #15
A uptake by the postsynaptic cell.
B reuptake by the presynaptic cell.
C degradation by an enzyme.
D being engulfed by a supporting glial cell.
Question #16
A either the entry of an anion or the exit of a cation.
B the entry of any ion.
C either the entry of a cation or the exit of an anion.
D the entrance of either sodium or potassium.
Question #17
A voltage-, dendrite
B voltage-, axon
C chemically, dendrite
D chemically, axon
Question #18
A indirectly related to voltage and directly related to resistance.
B directly related to both voltage and resistance.
C inversely related to both voltage and resistance.
D directly related to voltage and inversely related to resistance.
Question #19
A dendritic lassos.
B reuptake by the presynaptic cell.
C phagocytosis by a macrophage.
D endocytosis by the postsynaptic cell.
Question #20
A their inactivated state to their resting state.
B their resting state to their activated state.
C their resting state to their inactivated state.
D their activated state to their resting state.