Action Potential Concepts (basic)

Which parts of a neuron RECEIVES chemical signals from a receptor or other neuron?

Which part of a neuron TRANSMITS an electrical impulse?

At resting potential, the charge inside a neuron is

• -55 mV

• 0 mV

• +40 mV

• -70 mV

The voltage that must be reached for an action potential to occur (Threshold) is

• -55 mV

• 0 mV

• +40 mV

• -70 mV

When the neuron is not conducting a nerve impulse the membrane is

• polarised
• depolarised
• repolarised
• action potential

Which stages of this graph (numbers) represent a neuron at rest?

• 2 and 3

• 4 and 5

• 1 and 5

• 6

Which stage of this graph (number) represents REPOLARIZATION of a neuron?

• 2

• 3

• 4

• 6

Which stage of this graph (number) represents a temporary hyperpolarization, where another action potential can't be initiated?

• 2

• 3

• 4

• 6

Tags

NGSS.HS-PS3-5

If threshold is NOT achieved, a weak action potential will occur.

• true

• false

Strong stimuli will produce stronger action potentials

• true

• false