Henry Dale's assertion that neurons could contain only one type ...

[ENagel]

Henry Dale's assertion that neurons could contain only one type of chemical messenger is
 
  a. correct.
 b. incorrect, as some neurons can release two small molecules in different locations.
 c. partially correct, in that neuropeptides are never found in the same neuron as amines or amino acids.
 d. partially correct, as neurons nearly always release more than a dozen neurotransmitters whenever stimulated.

Question 2

This chemical is released from the adrenal gland and travels through the bloodstream. It fits into the receptors on almost every cell in the body. The chemical is a(n)
 
  a. neurotransmitter.
  b. neurohormone.
 c. neuromodulator.
  d. antagonist.

[josephsuarez]

Answer to Question 1

b

Answer to Question 2

b

[ENagel]

Excellent

[juliaf]

Gracias!