Lec 4 Nerve Conduction Flashcards Preview

Dental Physiology > Lec 4 Nerve Conduction > Flashcards

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

conduction increases if time constant blank and length constant blank

A

shorter, longer

2
Q

high membrane resistance causes blank of the decline of graded potentials

A

reduction

3
Q

low internal resistance causes blank of the decline of graded potentials

A

reduction

4
Q

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

A

space constant

5
Q

space constant is aka

A

length constant

6
Q

internal resistance changes with blank

A

axon radius

7
Q

membrane resistance changes with blank

A

opening/closing channels

8
Q

time to reach 63% of final peak voltage

A

time constant

9
Q

measure of how many charges are needed to change cell voltage

A

capacitance

10
Q

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

A

decrease

11
Q

high membrane capacitance has a blank time constant

A

long

12
Q

myelin blank the capacitance and shortens the time constant

A

lowers

13
Q

larger axon has no change in blank constant

A

time

14
Q

regeneration of the ap occurs at blank

A

nodes of ranvier

15
Q

myelin allows for blank conduction

A

saltatory

16
Q

small axons have slower conduction speeds and are blank

A

unmyelinated

17
Q

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

A

blocked

18
Q

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

A

field potentials

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