Topic 10 Immune System: Animal Immunity Overview

Question 1

• The first line of defense is nonspecific immunity, and is called innate immunity, which is generalized protecting. Innate immunity consists of:

Answer 1

Note

Question 2

• Physical and hostile barrier covered with oily and acidic (pH 3-5) secretions from sweat glands

Answer 2

1. Skin

Question 3

• Lysozyme (saliva, tears) which break down the cell wall of bacteria

Answer 3

2. Antimicrobial Proteins

Question 4

• Line the lungs and serve to sweep invaders out

Answer 4

3. Cilia

Question 5

• Stomach kills most of the microbes we ingest

Answer 5

4. Gastric Juice

Question 6

• The bacteria found in digestive tract and vagina outcompete many other organisms

Answer 6

5. Symbiotic Bacteria

Question 7

• The second line of defense is nonspecific and innate

Answer 7

Note