Action Potential Day 1

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Multiple Choice

Which ions are involved in an action potential?

• Na; Cl
• Na; K
• K; Cl
• Na; Ca

Multiple Choice

Action potentials run along the ______ from ______ to ________.

• axon, dendrites, axon terminals

• axon, axon terminals, dendrites

• dendrites, axon, axon terminals

• axon terminals, axon, dendrites

Multiple Choice

What is the normal resting potential of a neuron cell membrane?

• +40mV
• -30mV
• +55mV
• -70mV

Multiple Choice

At which point on the diagram does depolarisation of the axon occur? 

• A
• B
• C
• D

Multiple Choice

A membrane potential becoming less negative is called

• hyperpolarization

• depolarization

• repolarization

• polarization

Multiple Choice

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

• sodium, depolarization, potassium

• potassium, depoloarization, sodium

• sodium, repolarization, potassium

• postassium, repolarization, sodium