Need help with these questions 12:31N A allThis document contains ink, shapes and .1) Two different-diameter cylindrical dendrites on acerebellar Purkinje neuron have the following passivemembrane properties. Assume the external resistance iszero and that the dendrites are cylindrical structures withhomogenous membrane properties along their entirelength.Im, ohmri, ohm/cmCm, F/cmх сmDendrite 12х 1061х 10102 x 10--9Dendrite 22 X 1041 X 1062 X 10-8An excitatory synaptic input impinges on each of thesedendrites at a distance of o.o2 cm from the cell body.Activation of these synapses causes a depolarization of thepostsynaptic cell, which is called an excitatory postsynapticpotential (EPSP). When a subthreshold EPSP occurs at thissynapse, the amplitude of the EPSP decays along anexponential time course back to the resting potential.a) Would the decay rate in dendrite 1 be faster, slower, orthe same as in dendrite 2? Justify your answerquantitatively.b) The amplitude of the EPSP decreases as a function ofdistance away from the synapse. In which dendrite wouldthe amplitude decrease more with distance. Justify youranswer quantitatively.II

Answer :: Neurons are one of the two types of cells that together make the nervous tissue. Each…

1) Two different-diameter cylindrical dendrites on a cerebellar Purkinje neuron have the following passive membrane properties. Assume the external resistance is zero and that the dendrites are cylindrical structures with homogenous membrane properties along their entire

1) Two different-diameter cylindrical dendrites on a cerebellar Purkinje neuron have the following passive membrane properties. Assume the external resistance is zero and that the dendrites are cylindrical structures with homogenous membrane properties along their entire

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter36: Sensory Systems

Section: Chapter Questions

Problem 19RQ: Benign Paroxysmal Positional Vertigo is a disorder where some of the calcium carbonate crystals in...

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Immune Disorders

The collaboration between the cells and proteins that work together as a defense system against infection comprises the immune system.Each of them performs a variety of tasks to recognize and/or react against a foreign body.

Question

Need help with these questions

12:31
N A all
This document contains ink, shapes and .
1) Two different-diameter cylindrical dendrites on a
cerebellar Purkinje neuron have the following passive
membrane properties. Assume the external resistance is
zero and that the dendrites are cylindrical structures with
homogenous membrane properties along their entire
length.
Im, ohm
ri, ohm/cm
Cm, F/cm
х сm
Dendrite 1
2х 106
1х 1010
2 x 10--9
Dendrite 2
2 X 104
1 X 106
2 X 10-8
An excitatory synaptic input impinges on each of these
dendrites at a distance of o.o2 cm from the cell body.
Activation of these synapses causes a depolarization of the
postsynaptic cell, which is called an excitatory postsynaptic
potential (EPSP). When a subthreshold EPSP occurs at this
synapse, the amplitude of the EPSP decays along an
exponential time course back to the resting potential.
a) Would the decay rate in dendrite 1 be faster, slower, or
the same as in dendrite 2? Justify your answer
quantitatively.
b) The amplitude of the EPSP decreases as a function of
distance away from the synapse. In which dendrite would
the amplitude decrease more with distance. Justify your
answer quantitatively.
II

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