Finish the sentence so that it is correct: A hormone may be defi ned as a chemical messenger that

Q. Finish the sentence so that it is correct: A hormone may be defi ned as a chemical messenger that:

A.            is released into circulation in small quantities.

B.            facilitates communication between adjacent cells.

C.            moves through extracellular fl uid between cells of a single tissue

D.            crosses the synaptic cleft and binds to a receptor.

Answer: is released into circulation in small quantities.