Action Potential

Front

Which ions are involved in an action potential? Options: Na; Cl, Na; K, K; Cl, Na; Ca

Back

Na; K

Front

Action potentials run along the ______ from ______ to ________.

Back

axon, dendrites, axon terminals

Front

Which of the following is involved in maintaining the resting membrane potential of neurons? 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 the normal resting potential of a neuron cell membrane?

Back

-70mV

Front

At which point on the diagram does depolarisation of the axon occur? Options: A, B, C, D

Back

B

Front

The sodium potassium pump restores the resting membrane potential. By which process does this occur?

Back

Active transport

Front

A membrane potential becoming less negative is called

Back

depolarization

Front

Which number on the graph represents the threshold potential? Options: 1, 2, 3, 4, 6

Back

6

Front

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

Back

potassium, repolarization, sodium

Front

An electrical impulse within a single neuron is called a

Back

action potential