Innate Immunity: Inflammation and Wound Healing

Question 1

What is first line defense?

Answer 1

• Innate immunity
• Physical, mechanical, biochemical barriers

Question 2

What is the second line of defense?

Answer 2

Inflammation

Question 3

What is third line of defense?

Answer 3

Adaptive (acquired) (specific) immunity

Question 4

What are examples of physical barriers?

Answer 4

Physical:
Skin
Sloughing off with dead cells
Linings of the gastrointestinal, genitourinary, and respiratory tracts
Mucus and cilia trap microorganisms
Expelled through
Coughing and sneezing
Urination
Vomiting and defecation

Question 5

What are examples of chemical barriers?

Answer 5

Secrete saliva, tears, earwax, sweat, and mucus
Lysozymes attack bacteria
Antimicrobial peptides kill bacteria, fungi, viruses