HBS 2.1.4 The Secret to Signals

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

What is involved in maintaining the resting membrane potential of neurons?

Back

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

Front

Point on the diagram where depolarisation of the axon occurs. Options: A, B, C, D

Back

B

Front

Process by which the sodium potassium pump restores the resting membrane potential.

Back

Active transport

Front

Which number on the graph represents the threshold potential?

Back

6

Front

An electrical impulse within a single neuron is called a

Back

action potential

Front

When a neuron is not engaged in an impulse.

Back

Resting potential

Front

When is the potassium channel open?

Back

during repolarization only

Front

Identify the dendrite: W, X, Y, Z

Back

W