Author Question: In a myelinated axon, action potentials are produced a. only at the axon hillock. b. only at the ... (Read 292 times)

madam-professor

  • Hero Member
  • *****
  • Posts: 584
In a myelinated axon, action potentials are produced
 
  a. only at the axon hillock.
 b. only at the axon hillock and at the nodes of Ranvier.
 c. along the entire length of the axon membrane.
 d. only under segments of myelin.

Question 2

Action potentials only go in one direction, away from the cell body, because
 
  a. the adjacent prior segment of axon is still at +40mV.
 b. voltage-dependent gates are limited in the frequency with which they can open.
 c. the adjacent prior segment is still in refractory period.
 d. the action potential temporarily disables the sodium-potassium pumps.



AmberC1996

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

b

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

For a complete list of videos, visit our video library