Regrowth of a damaged axon can occur more readily in the ...

[BRWH]

Regrowth of a damaged axon can occur more readily in the peripheral nervous system than in the brain because
 
  a. Schwann cells form barriers to axon regrowth.
  b. Schwann cells form cylinders through which new axons can grow and reinnervate a target cell nerve cell.
  c. Schwann cells generate a chemical signal that instructs nerve cells to die.
  d. Astrocytes form cylinders through which new axons can grow and reinnervate a target cell nerve cell.
  e. Oligodendroglia form barriers to axon regrowth.

Question 2

Myelination of brain nerve axon membranes is accomplished by
 
  a. oligodendrocytes.
  b. microglia.
  c. astrocytes.
  d. neurocytes.
  e. Schwann cells.

[gabrielle_lawrence]

Answer to Question 1

Answer: b. Schwann cells form cylinders through which new axons can grow and reinnervate a target cell nerve cell.

Answer to Question 2

Answer: a. oligodendrocytes

[BRWH]

Wow, this really help

[FergA]

Gracias!