5 stages of inflammation

Question 1

1. injury/wound/insult

Answer 1

tissue is damaged

Question 2

2. vasoconstriction

Answer 2

sympathetic reaction

wound does not spew blood unless artery was damaged

Question 3

3. vasodilation

Answer 3

bring more blood to injured site

histamine and bradykinin dilate vessels

Question 4

4.swelling/edema

Answer 4

cells move into damaged area

chemotaxis–>diapedesis/leukocyte extravasation

Question 5

5: healing

Answer 5

mast cells make heparin and serotonin
serotonin: for wound healing, stimulates the myofibroblasts which cause constriction and form type 3 collagen for early wound healing
fibrin forms the scar