The Nurse Is Discussing the Body's First and Second Lines

question 25

Multiple Choice

The nurse is discussing the body's first and second lines of defense against infection with a community group.The first line of defense includes:

• A) Teeth
• B) Sweat
• C) White blood cells
• D) T lymphocytes

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Definitions:

Epithelial

Relating to epithelium, a type of tissue that lines the outer surfaces of organs and blood vessels, as well as the inner surfaces of cavities in many internal organs.

Collagen Fibers

Strong, insoluble protein fibers that form the main component of connective tissue, giving it strength and elasticity.

Arrector Pili

Small muscles attached to hair follicles that contract to cause "goosebumps" and help with thermal regulation.

Epidermis

The foremost layer of the skin, responsible for providing a barrier against water and establishing our skin tone.