Action Potentials

Question 1

What is the purpose of the nervous system

Question 2

What is the resting potential

Question 3

What is graded potential

Question 4

What is action potential

Question 5

What is synaptic activity

Question 6

What is information processing

Question 7

what does it mean for Ion channels to be voltage-gated

Question 8

What ions are intracellular

Question 9

What ions are extracellular

Question 10

What is the resting membrane potential

Question 11

What is the equilibrium potential

Question 12

What is an electrical potential

Question 13

What happens when the membrane potential changes

Question 14

A graded depolarization of the axon hillock much be at least _________ mV to change resting potential

Question 15

What is the threshold level of voltage-gated sodium channels

Question 16

What is the all or none principle

Question 17

What is excitatory impulse

Question 18

What is inhibitory impulse

Question 19

What is a stimulus

Question 20

What is a depolarizing signal

Question 21

What is a hyperpolarizing signal

Question 22

What channel do excitatory signals open

Question 23

What channel to inhibitory signals open

Question 24

What is summation of signals

Question 25

What are the different ways that depolarization can occur

Question 26

What are the different ways that hyperpolarization can occur

Question 27

What is the presynaptic neuron

Question 28

What is the postsynaptic neuron

Question 29

What are the four steps in action potentials

Question 30

what does the extracellular and intracellular membrane look like before the threshold is reached

Question 31

What does the extracellular and intracellular environment look like after the activation of Na Channels What causes this

Question 32

What does the extracellular and intracellular environment look like during the inactivation of sodium channels and activation of potassium channels What causes this

Question 33

What is the refractory period

Question 34

What is the absolute refractory period

Question 35

What is the relative refractory period

Question 36

How does the refractory period relate to flushing a toilet

Question 37

How does propagation work

Question 38

What is continuous propagation

Question 39

What is saltatory propagation

Question 40

Continuous propagation only occurs in _________ axons

Question 41

Saltatory propagation only occurs in _______ axons

Question 42

What is action potential propagation

Question 43

What are the steps in the continuous propagation of unmyelinated axons

Question 44

What are the steps that occur in myelinated axons

Question 45

What are the benefits of using saltatory propagation rather than continuous

Question 46

What are Type A nerve fibers What is their relative size What is their function

Question 47

What are Type B nerve fibers What is their relative size What is their function

Question 48

What are Type C nerve fibers What is their relative size What is their function

Question 49

What are Type D nerve fibers What is their relative size What is their function

Question 50

Axon _________ affects the _______ that an action potential moves

Question 51

Why does axon diameter affect the speed that an action potential moves