Transmission of Nerve Impulse

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created 7 years ago by Wcc2014
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1

entire inside of the cell (intracellular fluid) is

neutral

2

entire outside of the cell (extracellular fluid) is

neutral

3

is potassium more intracellular or extracellular

intracellular

4

is sodium more intracellular or extracellular

extracellular

5

is chloride more intracellular or extracellular

extracellular

6

is protein (P-) more intracellular or extracellular

intracellular

7

does resting membrane potential require a stimuli

no

8

what is charge of the resting membrane potential

-70 to -90 millivolts

9

the resting membrane charge occurs because

K+ goes from inside the cell to the outside

10

does local potential require a stimuli

yes

11

what happens to the membrane because of the stimuli for local potential

the membrane become more permeable to either K+ or Cl- or Na+

12

if the membrane in local potential become more permeable to K+ then what happens to K+

K+ moves from inside the cell to the outside, making the inside of the cell membrane more negative.

13

what is it called when K+ moves from inside the cell to the outside, making the inside of the cell membrane more negative.

hyperpolarization

14

If the membrane became more permeable to Cl- then what happens

Cl- moves from outside the cell to the inside, making the cell more negative.

15

what is it called when Cl-moves from outside the cell to the inside, making the cell more negative.

hyperpolarization

16

if the membrane became more permeable to Na+ then what would happen

Na+ moves from out to in, making the inside less negative

17

what is it called when Na+ moves from out to in, making the inside less negative

depolarization

18

what is the only one that touches the threshold

depolarization

19

requires a stimuli

local potential

20

can be of two types

local potential

21

is graded

local potential

22

can show the phenomenon of accommodation

local potential

23

occurs if a depolarizing type of local potential touches the threshold

action potential

24

shows a all or non phenomenon

action potential

25

has three phases

action potential

26

due to Na+ moving form outside to inside making the inside of the cell membrane less negative and then positive

depolarizing phase of action potential

27

due to K+ moving from inside to outside making the inside of the cell membrane less positive and then negative

repolarizing phase of action potential

28

due to sodium-potassium exchange pump, requires energy

afterpotential phase

29

transmission of action potential from one cell to the other cell occurs at specialized areas called

synapse

30

what requires the use of neurotransmitters (acetylocholine, dopamine, etc)

synapse