The speed with which nerve impulses travel is determined in large part by the characteristic time...
The speed with which nerve impulses travel is determined in large part by the characteristic time constant τ=RC of the circuit formed by the resistivity of the axon and the capacitance of its wall. The resistance of a 1.00-mm-long segment of an axon is 26.5 MΩ.
A) For nerve axons with no protective myelin sheath, the wall capacitance is about 3.24×10−10F for each segment of length L=1.00mm. Find the speed of the nerve impulses given by v=L/τ.
B) Many axons are surrounded by a myelin sheath that decreases the wall capacitance to 1.57×10−12F. What is the speed of nerve impulses along such myelinated axons?
Homework Answers
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The speed with which nerve impulses travel is determined in
large part by the characteristic time...
Please help me solve this problem and show your work. Thank you! Problem 21.81 3 of...
Please help me solve this problem and show your work. Thank
you!
Problem 21.81 3 of 3 I Review The speed with which nerve impulses travel is determined in large part by the characteristic time constant T = RC of the circuit formed by the resistivity of the axon and the capacitance of its wall. The resistance of a 1.00-mm-long segment of an axon is 26.0 M92. Part A For nerve axons with no protective myelin sheath, the wall capacitance...
A myelinated axon conducts nerve impulses at a speed of 30m/s . What is the signal...
A myelinated axon conducts nerve impulses at a speed of 30m/s . What is the signal speed if the thickness of the myelin sheath is halved but no other changes are made to the axon?
The resistor-capacitor network model we developed in Lecture (see figure below where it is shown only...
The resistor-capacitor network model we developed in Lecture
(see figure below where it is shown only for the myelinated case)
for the transmission of signals in nerve axons can actually be
applied to both unmyelinated and myelinated nerve cells to estimate
the propagation speed of a nerve impulse. In the unmyelinated case
the 6-7 nm thick plasma membrane (the lipid bilayer) acts both as a
(very thin) dielectric layer forming a capacitor between the inside
of the axon and the...
please answer question 8-13 This is the prior information: Nerve impulses are electrical currents in the...
please answer question 8-13
This is the prior information: Nerve impulses are electrical
currents in the form of “ionic flows.” Therefore the electrical
properties of the axon are important to understand in order to
understand the flow of electrical impulses. In this test, you will
explore the capacitance and resistivity of an axon of a nerve cell.
For this test, the axon will be treated as a CYLINDER of arbitrary
length “L” and radius “a” that is filled with a...
Please help me solve this problem and show your work. Thank
you!
Problem 21.81 3 of 3 I Review The speed with which nerve impulses travel is determined in large part by the characteristic time constant T = RC of the circuit formed by the resistivity of the axon and the capacitance of its wall. The resistance of a 1.00-mm-long segment of an axon is 26.0 M92. Part A For nerve axons with no protective myelin sheath, the wall capacitance...
The resistor-capacitor network model we developed in Lecture
(see figure below where it is shown only for the myelinated case)
for the transmission of signals in nerve axons can actually be
applied to both unmyelinated and myelinated nerve cells to estimate
the propagation speed of a nerve impulse. In the unmyelinated case
the 6-7 nm thick plasma membrane (the lipid bilayer) acts both as a
(very thin) dielectric layer forming a capacitor between the inside
of the axon and the...
please answer question 8-13
This is the prior information: Nerve impulses are electrical
currents in the form of “ionic flows.” Therefore the electrical
properties of the axon are important to understand in order to
understand the flow of electrical impulses. In this test, you will
explore the capacitance and resistivity of an axon of a nerve cell.
For this test, the axon will be treated as a CYLINDER of arbitrary
length “L” and radius “a” that is filled with a...
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