The wall of the alimentary canal is built from how many basic tissue layers?
A6
B4
C3
D5
Answer & Solution
Correct answer: B. 4
1. The layers are named from inside outward.
2. Mucosa, submucosa, muscularis and serosa are listed.
3. So there are 4 layers.
_Source: OpenStax Anatomy and Physiology 2e, Chapter 23, The Digestive System._
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