How does a wound heal?

Answer 1

mitosis

Answer 2

There are 3 phases in wound healing

1. Inflammatory
2. Proliferation
3. Remodelling

I. Inflammatory phase

The inflammatory phase takes place immediately after the wound is inflicted.

In the inflammatory phase (lag phase/resting phase), clotting takes place in order to obtain hemostasis, or stop blood loss, and various factors are released to attract cells that phagocytise debris, bacteria, and damaged tissue and release factors that initiate the proliferative phase of wound healing.

Platelets, PMNs, Macrophages are all involved in this phase.

II. Proliferation phase

Takes about 2 days to 3 weeks

A) Granulation

• Fibroblasts lay bed of collagen
• Fills defect and produces new capillaries

B) Contraction

• Wound edges pull together to reduce defect

C) Epithelialization

• Crosses moist surface
• Cell travel about 3 cm from point of origin in all direction

III. Remodelling phase

Takes 3 weeks to 2 years

A) New collagen forms which increases tensile strength to wounds

B) Scar tissue is only 80 percent as strong as original tissue

Resources: http://www.medicaledu.com/phases.htm

http://en.wikipedia.org/wiki/Wound_healing

These two resources talk more about the details of wound healing. Especially the resource for wikipedia.

it heals over time it heals itself by forming a scab.

Answer 3

A scab will form to close the wound so your body can heal. Then once it has healed the scab will eventually go away.

Answer 4

mitosis