Test Questions

Question 1

You are able to stimulate a nerve after an action potential but will not get a response until it is back to its resting state (which is why we use supramaximal stimulation for our studies). Hyperpolarization is due to

Answer 1

potassium rushing back into the cell

Question 2

What is the nernst equation

Answer 2

chemical work = electrical work = 0

Na+ K+ pump (3Na pumped out for every 2+ pumped in)

Question 3

Name the three components that make up peripheral nerved

Answer 3

Endoneurium - around each axon
Perineurium - around each fascicle
Epineurium - around the entire nerve

Question 4

What does myotonia on EMG spontaneous activity show in myopathy?

Answer 4

pompe’s disease (acid maltase deficiency)