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• Transmission of nerve impulses. Nerve cells transmit elec- tric signals through their long tubular axons. These signals propagate due to a sudden rush of Na* ions, each with charge +e, into the axon. Measurements have revealed that typically about 5.6 X 10" Na ions enter each meter of the axon during a time of 10 ms. What is the current during this inflow of charge in a meter of axon?

• Transmission of nerve impulses. Nerve cells transmit elec- tric signals through their long tubular axons. These signals propagate due to a sudden rush of Na* ions, each with charge +e, into the axon. Measurements have revealed that typically about 5.6 X 10" Na ions enter each meter of the axon during a time of 10 ms. What is the current during this inflow of charge in a meter of axon?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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3. Transmission of nerve impulses. Nerve cells transmit elec- BIO tric signals through their long tubular axons. These signals propagate due to a sudden rush of Na* ions, each with charge +e, into the axon. Measurements have revealed that typically about 5.6 X 10" Na ions enter each meter of the axon during a time of 10 ms. What is the current during this inflow of charge in a meter of axon?
Transcribed Image Text:3. Transmission of nerve impulses. Nerve cells transmit elec- BIO tric signals through their long tubular axons. These signals propagate due to a sudden rush of Na* ions, each with charge +e, into the axon. Measurements have revealed that typically about 5.6 X 10" Na ions enter each meter of the axon during a time of 10 ms. What is the current during this inflow of charge in a meter of axon?
Expert Solution
Step 1

Given that, 

Number of charge Na+, N= 5.6×1011 ions

Time, t= 10 ms=10×10-3 s

The current during  inflow in one meter of nerve axon is:

firstly find out the charge which passes through the axon,

Q= N e  (where, e= charge on electron=-1.6×10-19C)

= 5.6×1011×-1.6×10-19 C

Q= 8.96×10-8 C

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