Part B

Question 1

Membrane Potentials: Signals

Answer 1

Used to integrate, send, and receive information

Question 2

Changes in Membrane Potential

Answer 2

• Depolarization
• Repolarization
• Hyperpolarization

Question 3

Action Potentials (APs)

Answer 3

• Action potentials are only generated by muscle cells and neurons
• They do not decrease in strength over distance
• An action potential in the axon of a neuron is a nerve impulse

Question 4

Phases of the Action Potential

Answer 4

1 – resting state
2 – depolarization phase
3 – repolarization phase
4 – hyperpolarization

Question 5

Multiple Sclerosis (MS)

Answer 5

An autoimmune disease that mainly affects young adults

Question 6

Multiple Sclerosis: Treatment

Answer 6

• The advent of disease-modifying drugs
• Hold symptoms at bay
• Reduce complications
• Reduce disability