Neuron Membrane Potentials

Question 1

Graded potentials are in response to

Answer 1

Input

Question 2

Graded potentials occur in the

Answer 2

• Dendrites

- Soma

Question 3

The size and duration of graded potentials is determined by

Answer 3

Excitatory and inhibitory inputs

Question 4

Graded potentials do not move onto

Answer 4

Axons

Question 5

Which potentials are found in axons?

Answer 5

Action potential

Question 6

Action potentials start at the

Answer 6

Trigger zone

Question 7

Action potentials start when the

Answer 7

Summation of graded potentials brings the membrane past the threshold potential

Question 8

Action potential is formed when the potential goes from

Answer 8

-70mV to -50mV

Question 9

Summation is how neurons

Answer 9

Process information from inputs

Question 10

Neurons respond to inputs from other neurons via

Answer 10

Neurotransmitters released at synapses

Question 11

Excitatory / inhibitory input depends on the

Answer 11

Type of neurotransmitter and receptor

Question 12

What are Synaptic potentials?

Answer 12

Graded potentials produced from a synapse

Question 13

What are Receptor potentials?

Answer 13

Potentials generated by stimuli / sensory receptors

Question 14

Depolarization happens when the

Answer 14

Graded potential moves the membrane towards 0

Question 15

How is the membrane during depolarization?

Answer 15

Less polarized / less charge separation

Question 16

Excitatory potentials are found during

Answer 16

Depolarization

Question 17

Hyperpolarization is when there is a

Answer 17

Graded potential that moves membrane away from 0

Question 18

During Hyperpolarization, how is the cell?

Answer 18

It has increased polarization / charge separation

Question 19

An Inhibitory potential decreases the

Answer 19

Chances of action potential generation

Question 20

Graded potentials decay with

Answer 20

Time and distance

Question 21

Spatial Summation involves

Answer 21

Multiple neurons

Question 22

Action potentials begin with the

Answer 22

Summation of graded potentials getting it to threshold value

Question 23

How is the plateau for action potentials?

Answer 23

Short