Question

Why does the esophagus not deteriorate through a person’s lifetime?

a. Cells can anabolize the food prior to entering the esophagus.
b. Cells are constantly dividing and replacing old or damaged cells.
c. Cells promote a fluid to build up along the esophagus to reduce friction.
d. Cells build a type of protein called enzymes that act as an armor.

Answer 1

The esophagus does not deteriorate through a person's lifetime because the cells of its inner lining are constantly being replaced. The surface epithelium of the esophagus is completely replaced every 3 to 6 days.

Step-by-step explanation:

The esophagus does not deteriorate through a person's lifetime because the cells of its inner lining are constantly being replaced as they are worn away from the frequent passage of food over them. This continuous cell renewal process ensures that the esophagus remains functional and maintains its smooth, slippery surface for the passage of food. The cells quickly replace damaged epithelial mucosal cells, with the surface epithelium of the esophagus being completely replaced every 3 to 6 days.