Neurons

Question 1

Electrical gradient

Answer 1

Unequal distribution of +&- Charging the cell membrane
Creating voltage

Question 2

Chemical gradient

Answer 2

Unequal ions
High to low is the flow

Question 3

What is voltage of Resting potential

Answer 3

Voltage inside the cell -70mV

Outside charge - inside charge= resting

Question 4

Sodium potassium pump

Answer 4

3Na+ out
2K+ in

Question 5

K leak

Answer 5

Channels open
K leaks from inside to outside
High to low

Question 6

Equilibrium potential

Answer 6

Electrical and chemical gradients balance

Question 7

What causes the positive charge to go up in the cell

Answer 7

When Na+ channels open and enter the cell

Question 8

What causes 0Vm

Answer 8

When outside and inside are the same
Death

Question 9

Depolarization of the neuron

Answer 9

When the protein Na+ goes up the voltage goes up

Question 10

Hyperpolarization

Answer 10

When K+ goes out of the cell the voltage becomes negative

Question 11

Rest potential charge is

Answer 11

-70

Question 12

Chemical stimuli

Answer 12

Open and closes channel chemically

Question 13

Electric stimuli

Answer 13

Open and close channel by voltage

Question 14

Mechanical stimuli

Answer 14

Opens and closes mechanically gated channels
Touch/pressure

Question 15

Graded potentials

Answer 15

Ripple effect
Open signal is stronger
Further from channel becomes weak

Question 16

Trigger zone

Answer 16

Axon hillock
Voltage gated Na+ channels

Question 17

Threshold potential

Answer 17

If enough voltage reaches it we’ll cause the channels to open