In order to understand the way the brain and nervous system ...

[fahad]

In order to understand the way the brain and nervous system function, it is important to remember that
 
  a. the nervous system communicates primarily via electrical messages.
 b. the nervous system communicates primarily via chemical messages.
 c. communication in the nervous system depends on how large the action potentials are.
 d. communication in the nervous system is dependent on both electrical and chemical messages.

Question 2

Myelinated axons in human beings conduct action potentials about _________ unmyelinated axons in invertebrates do.
 
  a. as fast as
 b. half as fast as
 c. six times faster than
  d. 24 times faster than

[Moriaki]

Answer to Question 1

d

Answer to Question 2

d

[fahad]

Excellent

[CAPTAINAMERICA]

Gracias!