Examples of physical barriers against pathogens include
A)sebaceous glands.
B)mucus.
C)epithelia.
D)epidermal layers.
E)All of the answers are correct.

Question

Quizplus · Accepted Answer

All of the physical barriers mentioned (sebaceous glands, mucus, epithelia, and epidermal layers) provide a physical block that prevents pathogens from entering the body. Sebaceous glands produce an oily substance that acts as a protective barrier on the skin's surface, mucus traps pathogens in the respiratory and digestive tracts, and epithelial cells create a barrier between the external environment and internal tissues. The multiple layers of the skin's epidermis make it harder for pathogens to penetrate and gain access to the body's internal environments.

Examples of Physical Barriers Against Pathogens Include