Cancer treatments such as chemotherapy target rapidly dividing, cancerous cells, but can also destroy noncancerous cells with a rapid rate of mitosis. Which small intestinal features are LEAST likely to be damaged by chemotherapy?

The muscularis externa layer

Explanation:

The muscularis externa layer has three layers of muscle. An innner oblique layer , a middle circular and an external longitudinal layer. The contraction of these muscle layers help to break up the food mechanically.

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