Resting Membrane

Question 1

Whats responsible for producing electrical potentials

Answer 1

Cellular mechanism

Question 2

What’s an electrical potential

Answer 2

the difference in concentration of a charged
particle between one point and another.

Question 3

What roduces current flow

Answer 3

Ep

Question 4

when the charged particles flow from
one place to another through ion channels or membranes.
Is the definition of?

Answer 4

Current flow

Question 5

Neurons communicate by producing Graded potential and Action potential

Answer 5

T

Question 6

T/f to produce graded potential there must be Resting membrane potential

Answer 6

T

Question 7

Electrochemical impulses are produced at

Answer 7

Membrane

Question 8

electrochemical impulses are used to

Answer 8

Transmit signals

Question 9

T or f
Changing in membrane potential in muscles activate many of the cell functions

Answer 9

T

Question 10

Selectivity of ion channels is based on

Answer 10

Charge lining the channel
Size of channel

Question 11

True or false
Most of ion channels are leaky

Answer 11

F, gated

Question 12

activation gate on Na+ channel opens by

Answer 12

depolarization

Question 13

The magnitude (amount) of a diffusion
potential is measured in

Answer 13

Mv

Question 14

The magnitude (amount) of a diffusion
potential is dependent upon

Answer 14

size of concentration gradient

Question 15

Size of this force is determined by

Answer 15

diffusion of
the charged ions.

Question 16

The Nernst equation is used to calculate the

Answer 16

equilibrium potential

Question 17

RMP is established by

Answer 17

diffusion potential

Question 18

Some gates are leaky, some are gated. Depending upon?

Answer 18

The POSITION of the gate

Question 19

True or false
Voltage gated channels are controled by membrane potential

Answer 19

True

Question 20

a diffusion
potential is caused by

Answer 20

Diffusion of iona

Question 21

diffusion potential magnitude is dependent upon

Answer 21

Size of concentration gradient

Question 22

True or false
Movement of ions across membrane causes flow of current

Answer 22

T

Question 23

Size of the electrical force is determined by

Answer 23

Diffusion of charged ions

Question 24

Equilibrium potential of k

Answer 24

94- w negativity inside and positivity outside

Question 25

Equilibrium potential for na

Answer 25

61 with positivity inside and negativity outside

Question 26

The Nernst equation is used to calculate?

Answer 26

equilibrium potential

Question 27

True or false Nernst equation converts concentration difference of an ion into a voltage

Answer 27

T

Question 28

.....equation is used to determine the resting membrane potential (RMP) in the cell with involvement of Na, K and Cl ions

Answer 28

Ghk

Question 29

The voltage difference across the cell membrane of excitable cells with negativity inside and positivity outside when membrane is not responding to any stimulus is called

Answer 29

Rmp

Question 30

RMP is established by

Answer 30

diffusion potential

Question 31

True or false Ions with highest permeability will make greatest Contribution to rmp

Answer 31

True

Question 32

True or false In resting condition more leaky K+ channels are open than Na+

Answer 32

T

Question 33

RMP (-90) is closer to EP of K (-94) because of its

Answer 33

High premeability

Question 34

For generation of resting membrane potential (RMP) only K leaky channels and Na-K pump are important

Answer 34

True

Question 35

Having a membrane potential does make membrane excitable

Answer 35

F

Question 36

Excitability depends upon the

Answer 36

possibility of depolarization

Question 37

True or false Cation is more effective in changing Vm

Answer 37

F. Both cations and anion are equally affective in changing Vm

Question 38

How is a graded potential produced

Answer 38

stimulation causing opening of ligand or mechanism gated channel

Question 39

......the part of neuron from where axon arises

Answer 39

Axon hillock

Question 40

The electrical difference across the membrane is measured by using a

Answer 40

Microelectrode

Question 41

What activates glands celk functions

Answer 41

Change in membrane potential

Question 42

What type of signals are graded and action potential

Answer 42

Electrical