Which of the following structures is correctly paired with its function?

 Which of the following structures is correctly paired with its function?

•  Stomach- absorption of nutrients
•  Mouth- mechanical digestion
•  Colon- formation of chyme
•  Small intestine- formation of feces

Incorrect

Answer:

Mouth-mechanical digestion.
Mouth – mechanical digestion: The mouth is the site where mechanical digestion begins. The teeth and tongue work to break down food into smaller pieces, which is further mixed with saliva to form a bolus for swallowing.

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Colon – formation of chyme is incorrect, because the colon (large intestine) does not form chyme. Chyme is the semi-digested, partially liquid food formed in the stomach and passed into the small intestine. The colon primarily absorbs water and electrolytes and forms feces.

 Small intestine – formation of feces is incorrect, because the small intestine is responsible for the digestion and absorption of nutrients, not the formation of feces. Feces are formed in the colon after water is absorbed from the undigested material.

Stomach – absorption of nutrients is incorrect, because the stomach’s primary role is to break down food using gastric juices and enzymes, forming chyme. Most nutrient absorption occurs in the small intestine, not the stomach. The stomach only absorbs a few substances, such as alcohol and some medications.