Navigation » List of Schools » East Los Angeles College » Physiology » Physiology 001 – Introduction to Human Physiology » Fall 2021 » Nervous System 2
Below are the questions for the exam with the choices of answers:
Question #1
A TRUE
B FALSE
Question #2
A more sodium ions diffuse into the cell than potassium ions diffuse out of it
B potassium ions continue to diffuse out of the cell after the inactivation gates of the voltage-gated sodium ion channels begin to close
C the inactivation gates of the voltage-gated sodium ion channels begin to open and the diffusion of sodium ions decreases
D the increased potassium ion permeability lasts slightly longer than the time required to bring the membrane potential back to its resting level
E the extra efflux of potassium ions causes the membrane potential to become slightly more positive than the resting value
Question #3
A potassium ions continue to diffuse out of the cell after the inactivation gates of the voltage-gated sodium ion channels begin to close
B the extra efflux of potassium ions causes the membrane potential to become slightly more positive than the resting value
C more sodium ions diffuse into the cell than potassium ions diffuse out of it
D the inactivation gates of the voltage-gated sodium ion channels begin to open and the diffusion of sodium ions decreases
E the increased potassium ion permeability lasts slightly longer than the time required to bring the membrane potential back to its resting level
Question #4
A potassium ions continue to diffuse out of the cell after the inactivation gates of the voltage-gated sodium ion channels begin to close
B the inactivation gates of the voltage-gated sodium ion channels begin to open and the diffusion of sodium ions decreases
C sodium ions diffusing into the cell through ligand-gated channels is greater than potassium ions diffuse out of it
D the extra efflux of potassium ions causes the membrane potential to become slightly more positive than the resting value
E the increased potassium ion permeability lasts slightly longer than the time required to bring the membrane potential back to its resting level
Question #5
A both Na+ and K+ diffuse into the cell
B more Na+ diffuses into the cell than K+ diffuses out of it
C more Na+ diffuses out of the cell than K+ diffuses into it
D more K+ diffuses out of the cell than Na+ diffuses into it
E more K+ diffuses into the cell than Na+ diffuses out of it
Question #6
A TRUE
B FALSE
Question #7
A TRUE
B FALSE
Question #8
A Na+ and K+ gates open at the same time.
B K+ gates open before Na+ gates.
C Na+ gates open while K+ gates remain closed.
D Na+ gates open before K+ gates.
E K+ gates open while Na+ gates remain closed.
Question #9
A The exterior of the cell has a net positive charge and the interior has a net negative charge.
B The exterior of the cell has a net negative charge and the interior is neutral.
C The exterior of the cell is neutral and the interior has a net negative charge.
D The exterior of the cell has a net positive charge and the interior is neutral.
E The exterior of the cell has a net negative charge and the interior has a net positive charge.
Question #10
A Synaptic vessels fuse with the plasma membrane and release acetylcholine.
B Ligand-gated sodium channels open.
C Acetylcholine is actively transported to the postsynaptic neuron.
D Sodium ions diffuse into the cell.
E Acetylcholine is actively transported from the presynaptic neuron.
Question #11
A FALSE
B TRUE
Question #12
A TRUE
B FALSE
Question #13
A Voltage-gated calcium ion channels open and calcium diffuses inward.
B Voltage-gated sodium ion channels open and sodium diffuses inward.
C Terminal vessels migrate to the plasma membrane.
D Ligand-gated calcium ion channels open and calcium diffuses inward.
E Ligand-gated sodium ion channels open and sodium diffuses inward.
Question #14
A ligand-gated sodium channels to open, and sodium ions to diffuse out of the cell
B voltage-gated sodium ion channels to open, and sodium ions to diffuse out of the cell
C voltage-gated sodium ion channels to open, and sodium ions to diffuse into the cell
D acetylcholine to diffuse into the cell
E voltage-gated calcium ion channels to open, and calcium ions to diffuse into the cell
Question #15
A LTP
B EPSP
C IPSP
D NMDA
Question #16
A long-term depression
B long-term potentiation
C presynaptic inhibition
D excitotoxicity
Question #17
A Neuropeptide Y
B Carbon monoxide
C ATP
D Endogenous opioids
Question #18
A ATP
B Carbon monoxide
C Neuropeptide Y
D Nitric oxide
Question #19
A Nitric oxide
B ATP
C Carbon monoxide
D Neuropeptide Y
Question #20
A Nitric oxide
B Endogenous opioids
C Endocannabinoids
D ATP
Question #21
A Neuropeptide Y
B Endogenous opioids
C ATP
D Carbon monoxide
Question #22
A Endocannabinoids
B Carbon monoxide
C ATP
D Endogenous opioids
Question #23
A It binds to sodium channels on the postsynaptic cell.
B It catalyzes reformation of ACh.
C It blocks muscarinic receptors.
D It catalyzes hydrolysis of ACh to remove it from the synaptic cleft.
Question #24
A Skeletal muscle, Autonomic ganglia, and Specific regions of the brain
B Autonomic ganglia
C Specific regions of the brain
D Skeletal muscle
Question #25
A Gap junctions
B Microvilli
C Desmosomes
D Tight junctions
Question #26
A Produce carrier proteins and ion channels
B Induce tight junctions between capillary endothelial cells
C Produce enzymes to destroy toxic substances
D Induce tight junctions between capillary endothelial cells,produce enzymes to destroy toxic substances and produce carrier proteins and ion channels
Question #27
A Oligodendrocytes
B Astrocytes
C Microglia
D Schwann cells
E Ependymal cells
Question #28
A he is an adult, and CNS neurons can only regenerate in childhood
B astrocytes that surround the CNS axons do not have enough myelin for regeneration
C inhibitory proteins in the PNS will prevent axons in his hand from ever regenerating
D neurons in the CNS lack Schwann cells, which play a major role in axon regeneration
Question #29
A Neurilemma
B Sheath of Schwann
C Nodes of Ranvier
D Myelin
E Both neurilemma and sheath of Schwann are correct.