Question

Which cells of "Crypts of Lieberkuhn" secrete antibacterial lysozyme ?

• A. Paneth cells
• B. Zymogen cells
• C. Kupffer cells
• D. Argentaffin cells

Answer 1

The Correct Option is A

The correct option is(A): Paneth cells
- Kupffer-cells are phagocytic cells of liver.
- Zymogen cells are enzyme producing cells.
- Paneth cell secretes lysozyme which acts as anti-bacterial agent.
- Argentaffin cells are hormone producing cells.

Answer 2

Explanation:

• Paneth cells- These are secretory cells that are located in the crypts of Lieberkühn of the small intestine. One of the main functions of Paneth cells is to secrete antimicrobial substances. Lysozyme is one of the main antimicrobial enzymes produced by Paneth cells which helps to protect the intestinal mucosa from bacterial infections.
• Zymogen cells- They are also known as chief cells and are found in the gastric glands of the stomach. Zymogen cells are responsible for secreting an enzyme called zymogen.
• Kupffer cells- are also called stellate macrophages. These cells are known as tissue macrophages in the liver. Kupffer cells help in digestion, detoxification, and storage and can help to improve liver immunity.
• Argentaffin cells are the epithelial cells which are present in the lining of digestive tracts. These cells are called hormone-releasing cells as they release a hormone called serotonin.

Therefore, the Paneth cells are the cells of “Crypts of Lieberkuhn" that secrete antibacterial lysozyme.