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Figure 1 shows a diagram of the major determinants of gastric acid secretion in the stomach. ECL = enterochromaffine-like, G = gastrin, H = histamine, H+ = protons, H2 = histamine receptor in gastric mucosa , ST2 = somatostatin receptor; “+” indicates a stimulatory response, “-“ indicates an inhibitory response. “Gastric acid.” Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc., 16 Sept. 2016. Web. 19 Sept. 2016. http://en.wikipedia.org/wiki/Gastric_acid

Given Figure 1, blocking histamine receptors with an antagonist will have what effect?

A

Less gastrin will be released by G cells.

B

More somatostatin will be released by D cells.

C

Less acid will be released by parietal cells.

D

Less histamine will be released by ECL cells.

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