Lec 4 Nerve Conduction

Question 1

conduction increases if time constant blank and length constant blank

Answer 1

shorter, longer

Question 2

high membrane resistance causes blank of the decline of graded potentials

Answer 2

reduction

Question 3

low internal resistance causes blank of the decline of graded potentials

Answer 3

reduction

Question 4

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

Answer 4

space constant

Question 5

space constant is aka

Answer 5

length constant

Question 6

internal resistance changes with blank

Answer 6

axon radius

Question 7

membrane resistance changes with blank

Answer 7

opening/closing channels

Question 8

time to reach 63% of final peak voltage

Answer 8

time constant

Question 9

measure of how many charges are needed to change cell voltage

Answer 9

capacitance

Question 10

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

Answer 10

decrease

Question 11

high membrane capacitance has a blank time constant

Answer 11

long

Question 12

myelin blank the capacitance and shortens the time constant

Answer 12

lowers

Question 13

larger axon has no change in blank constant

Answer 13

time

Question 14

regeneration of the ap occurs at blank

Answer 14

nodes of ranvier

Question 15

myelin allows for blank conduction

Answer 15

saltatory

Question 16

small axons have slower conduction speeds and are blank

Answer 16

unmyelinated

Question 17

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

Answer 17

blocked

Question 18

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

Answer 18

field potentials