Multiple choice

Which of the following statements is correct regarding the digestion and absorption by the small intestine of an individual?

  1. Intestinal digestive enzymes are secreted by cells of the oxyntic cells.

  2. Approximately 50% of the digested carbohydrate is absorbed in the small intestine.

  3. Small peptides are absorbed in the small intestine.

  4. The liver is the first organ of the digestive system to receive the digestion products of dietary fats.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer. There is no absorption of peptide longer than four amino acids. However, there is great absorption of di- and tripeptides in the small intestine. These small peptides are absorbed into small intestinal epithelial cell by co-transport with H+ ions through a transporter called PepT1.

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