The innermost layer of the stomach that allows for expansion and secretion of gastric juice is the
a. serosa. c. submucosa.
b. muscularis. d. mucosa.
D
The innermost layer, the mucous layer (mucosa), consists of a muscular layer that is arranged in longitudinal folds, or rugae, that can expand as the stomach fills. This layer also contains glands that secrete up to 3000 mL of gastric juice per day.
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