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Which of the following functions is NOT correctly matched with its description?
a.) absorption; passage of digested nutrients into the blood or lymph
b.) propulsion: physical breakdown of ingested food in the GI tract
c.) mechanical breakdown: churning movements in the GI tract
d.) ingestion: intake of food nutrients

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Answer:

Option b.) propulsion: physical breakdown of ingested food in the GI tract

Explanation:

The physical breakdown of ingested food in the GI tract is called Mechanical digestion, and it breaks the food into smaller parts, to have more surface area for digestion, also to increase mobility. An example of Propulsion is the act of swallowing, which objective is to move the food through the digestive tract.  

The correct order of functions is: Ingestion, Propulsion, Mechanical digestion, chemical digestion and Absorption.

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