Which cells in the intestine produce lactase?

• A. Goblet cells
• B. Paneth cells
• C. Enterocytes
• D. Muscle cells

Answer: (C)

Lactase is an enzyme that helps in the digestion of lactose, the sugar found in milk. It is produced by enterocytes, which are specialized epithelial cells lining the intestines. Enterocytes are responsible for the absorption of nutrients and the production of various enzymes, including lactase, which hydrolyze disaccharides into monosaccharides for absorption.

Goblet cells primarily produce mucus, which lubricates and protects the intestinal lining. Paneth cells are located at the base of the intestinal crypts and play a role in innate immunity by secreting antimicrobial molecules. Muscle cells, not found in the intestinal lining, are involved in contractions for peristalsis but do not produce digestive enzymes.

Thus, enterocytes are crucial for the digestion of lactose due to their ability to produce lactase, making them the correct choice in this context.