Ch 6 - Functional Properties of Neuron Flashcards Preview

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Flashcards in Ch 6 - Functional Properties of Neuron Deck (21):
0

this force creates a potential difference and it is measured by work

electrostatic

1

conductance equation

g = sigma x cross sectional area/length

2

bad conductor

lipid

3

conductance is also =

1/ resistance

4

current (A) formula

current (Amps) = potential difference (Volts) x conductance (Siemens)

5

current is usually the flow of ions from blank to blank

positive, negative

6

work formula

= force x distance

7

amount of energy that needs to be overcome combined with the electrostatic energy of the capacitor

force

8

increasing surface area of the axons, the greater the blank because there is more room for blank

capacitance, charge

9

if the plates of a capacitor are farther apart, then more blank must be done because the blank is lower

work, capacitance

10

important passive property of the neuron that is the distance where the initial voltage response decays to 37 percent of its initial value

length constant

11

length constant formula

wavelength = sqrt(rm / ro + ri)

12

time constant equation

t = rm x cm

13

large cells have blank time constants

short

14

small cells have blank time constants

long

15

ion channels can be thought of as blank

resistors

16

ion channels allow for the blank property of the membrane

leaky

17

conductance is related to

current and voltage

18

no current means there is an equilibrium of blank and blank gradients

electrical, chemical

19

wide and short axons have blank conductance and blank resistance???

high, little

20

nodes of ranvier are not blank

myelinated