The hairy fibers that extend from the body of a nerve cell are: ...

[wenmo]

The hairy fibers that extend from the body of a nerve cell are:
 
  A) dendrites.
  B) axons.
  C) nuclei.
  D) sheaths.

Question 2

Which condition occurs when an area of heart muscle dies or is permanently damaged because of an inadequate supply of oxygen to that area?
 
  A) embolism
  B) stroke
  C) myocardial infarction
  D) shock

[ms_sulzle]

Answer to Question 1

A
Explanation:
A) Correct.
B) There is only one long axon for a neuron.
C) A neuron has only one nucleus.
D) The sheaths cover the axon.

Answer to Question 2

C
Explanation:
A) Embolism is blockage of a vessel due to a clot or other substance.
B) A stroke is bleeding or a blockage of an artery in the brain.
C) Correct.
D) Shock is an emergency condition caused by abnormally low blood pressure.