GENERATION OF ACTION POTENTIAL

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

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

Tags

NGSS.HS-LS1-3

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

• -55 mV
• -70 mV
• 40 mV
• -75 mV

Which ions are involved in the electrical nerve impulse?

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

Tags

NGSS.HS-PS2-5

What number on the graph represents the Depolarization phase?

• 1
• 2
• 3
• 4

Why is -55 mV a significant number?

• This is the largest charge achieved during an action potential

• This is the threshold required to generate an action potential

• This is the resting charge of a neuron

• This is the charge when all the sodium is inside the cell

At what stage does Potassium move outside the neuron, and Sodium stop moving inside the neuron?

• Depolarizarion

• Repolarization

• Hyperpolarization

• Resting Potential

Which ions are involved in an action potential?

• Na; Cl
• Na; K
• K; Cl
• Na; Ca

What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?

• Axon
• Dendrites
• Node of Ranvier
• Myelin Sheath

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

• positive
• negative

In resting potential, neurons have more ____________ on the inside of the cell membrane.

• NaCl
• Na+
• K+
• Cl-