Posted: July 24th, 2017

Two chemicals are isolated from the body. When administered at the same time, these chemicals induce gastric acid secretion that is four times as great as that induced by either one alone. The two chemicals are most likely to be which of the following?

Two chemicals are isolated from the body. When
administered at the same time, these chemicals
induce gastric acid secretion that is four times as
great as that induced by either one alone. The
two chemicals are most likely to be which of the
following?
(A) Acetylcholine and secretin
(B) Gastrin and cholecystokinin
(C) Gastrin and histamine
(D) Histamine and vasoactive intestinal
polypeptide
(E) Secretin and cholecystokinin