Unit 4- Innate Immunity

Question 1

What is Inflammation?

Answer 1

Second line of defense. Activated by injury. Start point of immune system. Rapid acting. NON-SPECIFIC.

Question 2

3 Processes of Inflammation

Answer 2

1. Vasodilation - Increased blood flow - warmth.
2. Leakage of Plasma Proteins - Edema (Swelling)
3. Leukocyte recruitment - called into action.

Question 3

Acute Inflammation Processes (3)

Answer 3

Mast cell degranulation - Release histamine.
Activation of plasma systems - clotting
Release of nearby cellular products.

Question 4

Chronic Inflammation

Answer 4

Persistence of infection, antigen, or foreign body.

Question 5

Healing by primary intention

Answer 5

24 hours - Coagulation (Platelets, Neutrophils)
3-14 days - Proliferation (Regrow cells, mitosis)
Weeks/Months - Fine tune and clean (Epithelial cells, scar formation.)