Immune System: 1st Line of Defense (Physical)

Innate immunity prevents infections from gaining access to the body.

• True

• False

Which type of immunity provides a rapid response against pathogens?

• Adaptive

• Innate

• Specific

• None of the above

Fill in the blank: Adaptive immunity is ______ for microbial pathogens.

• immunity

• digestion

• respiration

• excretion

Which of the following is NOT a characteristic of innate immunity?

• A) Nonspecific

• B) Rapid response

• C) Has memory

• D) Cellular, physical, chemical responses

Acquired immunity is obtained through ______ or vaccination.

• active infection

• passive exposure

• genetic inheritance

• environmental factors

The 1st line of defense (Physical) includes structures, chemicals, and processes that prevent pathogens from entering the body.

• True

• False

Which of the following is true about the outer cells of the skin?

• Alive

• Dead

• Both alive and dead

• None of the above

Fill in the blank: The skin is usually ______, while mucous membranes are ______.

• dry, moist

• moist, dry

• oily, rough

• smooth, flaky

Which of the following is present in both skin and some mucous membranes?

• Defensins

• Lysozymes

• Both A and B

• None of the above

Which of the following is present in the skin but not in the trachea and uterine tubes?

• Sebum

• Cilia

• Both Sebum and Cilia

• Neither