Author Question: In some (although not all) cases of multiple sclerosis, one of the first symptoms noticed is a ... (Read 71 times)

pepyto

  • Hero Member
  • *****
  • Posts: 547
In some (although not all) cases of multiple sclerosis, one of the first symptoms noticed is a reduction in sensation from distal parts of the body, such as feet and hands. Which of the following statements best explains why this might happen?
 
  a. The fibers of the axons are reduced in diameter, so the information can't travel fast enough.
  b. Neural signaling may not work properly as a result of nervous system demyelination.
 c. The fibers of the axons are enlarged, slowing the neural transmission.
 d. The neurons have degenerated and are no longer producing neural transmission.

Question 2

A single oligodendrocyte may myelinate axons from an average of _____ different neurons.
 
  a. 2
 b. 5
 c. 10
  d. 15



lorealeza

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

b

Answer to Question 2

d



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

For a complete list of videos, visit our video library