Lec 4 Nerve Conduction Flashcards Preview

Dental Physiology > Lec 4 Nerve Conduction > Flashcards

Flashcards in Lec 4 Nerve Conduction Deck (18):
1

conduction increases if time constant blank and length constant blank

shorter, longer

2

high membrane resistance causes blank of the decline of graded potentials

reduction

3

low internal resistance causes blank of the decline of graded potentials

reduction

4

distance when voltage of a graded potential decays to 37% of its initial value

space constant

5

space constant is aka

length constant

6

internal resistance changes with blank

axon radius

7

membrane resistance changes with blank

opening/closing channels

8

time to reach 63% of final peak voltage

time constant

9

measure of how many charges are needed to change cell voltage

capacitance

10

opening a lot of channels will blank length constant and time constant

decrease

11

high membrane capacitance has a blank time constant

long

12

myelin blank the capacitance and shortens the time constant

lowers

13

larger axon has no change in blank constant

time

14

regeneration of the ap occurs at blank

nodes of ranvier

15

myelin allows for blank conduction

saltatory

16

small axons have slower conduction speeds and are blank

unmyelinated

17

local circuit current is sufficient to depolarize one or more downstream nodes beyond a blank node

blocked

18

synchronized activity by a large number of neurons that are oriented in the same direction

field potentials

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