The authors point out that the nervous system "house" would remain forever dark and lifeless without chemical couriers. Which of the following is NOT one of these messengers?
A) neurotransmitters
B) sodium ions
C) endogenous opioid peptides
D) endorphins

Question

Quizplus · Accepted Answer

Sodium ions are not chemical messengers, they are charged particles that play a crucial role in generating electrical signals in neurons but they are not involved in transmitting signals between neurons.

The Authors Point Out That the Nervous System "House" Would