intou BIO 1510 LECTURE NERVOUS SYSTEM QUESTIONS 1. What happens when a resting n
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intou BIO 1510 LECTURE NERVOUS SYSTEM QUESTIONS 1. What happens when a resting neuron's membrane depolarizes? a,There is a net diffusion of Na+ out of the cell b. Nat and K+ are concentrated on the outside of the membrane c-The equilibrium potential for K+ becomes more positive d. Na+ rushes in being concentrated on the inside of the cell 2 Where are neurotransmitter receptors located? a the postsynaptic membrane b.the nuclear membrane c.the nodes of Ranvier d.synaptic vesicle membranes 3 The part of a neuron responsible for receiving nerve signals is called a a.cell body b.axon c. dendrite d.antigen recptor 4 Which type of neuron integrates information from other neuron (s) and is found in the spinal cord? a. unipolar neuron b. interneuron c. basal nuclei d. ganglia following describes the concentration of K' and Na ions in and around a resting neuron? a.K ion concentration is higher inside of the cell, Na' ion concentration is higher outside of the cell. b.K ion concentration is higher outside of the cell, Na ion concentration is higher inside of the cell. ch' and Na ion concentrations are similar inside of and outside of the cell. d.K' and Na' ion concentrations are both higher outside of the cell. 6 An action potential a. will travel down the length of the axon b.is a large change in polarization. c. is an "all-or-nothing" response. d. all of the above 7 What prevents action potentials from traveling away from synaptic terminals? a.Inactivation of Na" channels behind the zone of depolarization. b.Inactivation of K channels behind the zone of depolarization. c.An increased in graded potential along the length of the axon. d.All of the above. B-Explanation / Answer
please ask questions separately and not all together
1 d sodium rushes in and gets concenraed inside the cell. Due to the influx of sodium the inside of the cell becomes less negative
2) a postsynaptic membrane
3)c Dendrites. These branched strcutures recieve information
4)b interneuron
these relay information between afferent and efferent neurons.
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