Action Potential

Front

An electrical impulse within a single neuron is called a

Back

action potential

Front

Which ion is pumped into the axon of a neuron to help maintain the resting potential?

Back

potassium

Front

Which one of the following is involved in maintaining a resting membrane potential? Options: Na+/K+ ATPase pump moves 3Na+ in for every 2K+ out, Na+/K+ ATPase pump moves 3K+ in for every 2Na+ out, Na+/K+ ATPase pump moves 3Na+ out for every 2K+ in, Na+/K+ ATPase pump moves 3K+ out for every 2Na+ in

Back

Na+/K+ ATPase pump moves 3Na+ out for every 2K+ in

Front

What is a characteristic of axons in motor neurons?

Back

K+ ions diffusing out of the axon repolarizes it.

Front

Depolarization occurs when

Back

sodium channels open

Front

Depolarization is occurring at number

Back

2

Front

Which of the following uses ACTIVE transport? sodium-potassium pump, sodium channel, potassium channel, diffusion

Back

sodium-potassium pump

Front

What number(s) on the graph represents the Resting Potential? Options: 1 and 2, 1 and 5, 2 and 3, 3 and 4

Back

1 and 5

Front

When a membrane potential reaches +30mV, ________ channels open, ________ occurs, and ________ channels close.

Back

potassium, repolarization, sodium

Front

What number on the graph represents the Hyperpolarization phase? Options: 1, 2, 3, 4

Back

4