240 Chapter 10
Stimulus
(A)
1
1
2
(^)
1 2
(^)
1 2
(^)
1 2
2
2
1 2 2 1
2
1
1 2 1
1
2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1
2 1
(^)
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
2 11
(^2 1)
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 2 2 1
(^1 2 2 1)
(^1 2 2 1)
1 2 2 1
(^1 2 2)
(^1 2)
(^1 2)
(^1)
(B)
(^)
Area of action potential
1
1
2
(^)
1 2
(^)
traveling along neuron
2
1
1 2
2
2
2
1
Na^1 Na^1 1 2
1 2
1
2 1
1 2
2 1
1 2 2 2 2 2 1 1 1 1 1 1 1 1 2 2
1
2 1 1 1 1 1 2 2 2 2 2 2 2 2 2 1
(^1)
2 1 1 1 1 1 2 2 2 2 2 2 2 2
(^2 1)
2 2 1
1 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 (^1 2 2 1)
Na^1 Na^1 1 2
(^2 1)
1 2 2 1
1 2 2 1
(^1 2 2)
(^1 2)
(^1 2)
1
1
1
2
(^)
1 2
(^)
1 2
(^)
Area of repolarization^1 2 2 21
(^) Na (^1) Na (^1 1 2 2 1)
1 2 (^2 1)
1
2
2 1
(^)
1 1 1 1 1 2 2 2 2 2 2 2 1 2
2 2 2 2 2 2 1 1 1 1 1 2 2 1
2 1
(^)
K^1 K^1 Na^1 1
2 2 2 2 2 2 1 1 1 1 1 2
(^2 1)
2 2 1
1 1 1 1 1 2 2 2 2 2 2 2 1 1 2 2 1
Na^1 Na^1
(^1 2 2 1)
1 2 2 1
1 2 2 1
(^1 2 2)
(^1 2)
(C)
(^1 2)
(^1)
Figure 10- 6 The electrical distribution surrounding a nerve fiber and transmission of a nerve impulse.
(^) ®
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