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Latest revision as of 02:35, 25 September 2026
In which layer of the GI tract are the smooth muscles located?
a) Mucosa
b) Submucosa
c) Muscularis Externa
d) Serosa
Click for Answer
Answer
Answer c. The mucosa contains differentiated cells that are specific to the function of their location in the GI tract. The submucosa consists of connective tissue that provides support and flexibility to the GI tract. The Muscularis Externa consist of Auerbach’s plexus and smooth muscle that aids in peristalsis. The serosa is the outermost layer of the GI tract and is made up of mostly connective tissue.
Notes
- This question originally printed in the Pediatric Anesthesiology Review Topics kindle book series, and appears courtesy of Naerthwyn Press, LLC.