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