Action Potential

a signal molecule that transmits nerve impulses across synapses

• neuron
• neurotransmitter
• nerve
• action potential

nerve impulse

• action potential
• resting potential
• membrane potential
• synapse

part of a neuron that receives information from other neurons

• axon
• dendrites
• myelin sheath
• synapse

Tags

NGSS.MS-LS1-2

a junction at which a neuron meets another cell

• axon
• dendrites
• myelin sheath
• synapse

What number(s) on the graph represents the Resting Potential?

• 1 and 2
• 1 and 5
• 2 and 3
• 3 and 4

When a neuron is depolarized, what are the first channels to open?

• Sodium
• Potassium
• Calcium
• ACTH

When a neuron is resting, the inside of the axon has a ____________ charge.

• positive
• negative

When a neuron is not engaged in an impulse.

• Resting potential
• Action potential
• Neural potential
• Synaptic potential

Which ions are involved in the electrical nerve impulse?

• Iodine and Sodium
• Potassium and Sodium
• Iron and Sodium
• Calcium and Iodine

what initiates the action potential?

• A neurotransmitter sends the signal to the cell
• A chemical message reaches the cell