TYK263

In which layer of the GI tract are the smooth muscles located?

a) Mucosa

b) Submucosa

c) Muscularis Externa

d) Serosa

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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.

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