Mucous membranes are quite thin and fragile. How can such delicate tissue provide defense against microbial invaders?
A) the mucus secreted by the mucous membrane physically traps microbes.
B) the mucus contains a variety of antimicrobial chemicals and molecules.
C) both the mucus and the outer layer of cells are shed frequently.
D) the mucus is a physical trap that contains a variety of antimicrobial chemicals.
E) the mucus physically traps microbes, contains a variety of antimicrobial chemicals, and is shed constantly, along with the outermost layer of cells.

Question

Quizplus · Accepted Answer

Mucous membranes provide defense against microbial invaders through multiple mechanisms. The mucus itself physically traps microbes, while also containing a variety of antimicrobial chemicals and molecules. The outer layer of cells is shed frequently, helping to remove any microbes that may have attached to the surface. This combination of physical and chemical barriers helps to protect the body from infection.

Mucous Membranes Are Quite Thin and Fragile