Wound Healing/Burn/Derm

Question 1

When does the proliferative phase of wound healing start and what cells are prevalent?

Answer 1

5 days, fibroblasts producing collagen

Question 2

What are the predominant cell types in wound healing at days 1-2, 3-4, and >5. What do these cells do?

Answer 2

1-2: PMNs–cause inflammatory response, defend against infection
3-4: Macrophages–stimulate fibroblasts, release growth factors and cytokines
5: fibroblasts- replace fibronectin-fibrin with collagen

Question 3

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Answer 3

Basal cell carcinoma

Question 4

Actinic keratosis can lead to?

Answer 4

Squamous cell carcinoma