There are four basic layers of the digestive tract. Arrange them in order from the lumen (deep to superficial)
A) serosa, mucosa, submucosa, and muscularis externa
B) muscularis externa, serosa, mucosa, and submucosa
C) mucosa, submucosa, muscularis externa, and serosa
D) submucosa, serosa, muscularis externa, and mucosa
C
Explanation:
A) The serosa is not the innermost layer of the digestive tract.
B) The muscularis externa is not the innermost layer of the digestive tract.
D) The submucosa is not the innermost layer of the digestive tract.
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