Wounds


Rank and Wakefield classification is used for


A. Scar

B. Wound Healing

C. Wounds

D. Crush Injury



Chronic wounds do not follow the normal healing process and show no signs of healing in


A. 1 week

B. 2 weeks

C. 3 weeks

D. 4 weeks



Inflammatory phase of wound healing begins Immediately after formation and lasts for


A. 36 hours

B. 72 hours

C. 1 weeks

D. 2 weeks



Proliferative phase of wound healing begins from


A. 24 hours

B. 2nd day

C. 3rd day

D. 6th day



Proliferative phase of of wound healing which collagen is deposited initially?


A. Type I collagen

B. Type II collagen

C. Type III collagen

D. Type IV collagen

Remodelling phase of of wound healing Type III collagen is replaced by


A. Type I collagen

B. Type II collagen

C. Type IV collagen

D. Type V collagen



Most common amino acid sequence of collagen are


A. Glycine-Leucine

B. Glycine-Proline

C. Proline-Leucine

D. Glycine-Valine



Major collagen in granulation tissue


A. Type I collagen

B. Type II collagen

C. Type III collagen

D. Type V collagen



Major collagen in normal skin


A. Type I collagen

B. Type II collagen

C. Type III collagen

D. Type V collagen



Ratio of type I collagen to type III collagen in final scar tissue becomes


A. 1:1

B. 2:1

C. 1:4

D. 4:1



In shorts


Wound Healing & Collagen Types


1Normal skinType I : Type III Collagen Ratio is 4:1
2Granulation TissueType III is Major Collagen
3Early ScarType I : Type III Collagen Ratio is 1:1
4Final ScarType I : Type III Collagen Ratio is 4:1
5Major Amino acid in normal collagenGlycine
5Major Amino acid sequence in normal collagenGlycine – Proline
Wound Healing & Collagen

Normal dermal skin

Normal dermal skin contains 80% type I (20% type III) collagen


Scar strength

  • 3% in 1 week;
  • 20% in 3 weeks;
  • 80% in 12 weeks
  • Final matured scar is acellular and avascular.

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