Stages Of Healing Flashcards
Describe hemostasis
First step in stages of healing. Occurs immediately after injury. Process which causes bleeding to stop. The platelet is the key cell responsible for this function. The body forms a clot to prevent further bleeding.
List 4 stages of healing
- Hemostasis
- Inflammation
- Proliferation
- Remodeling
Describe inflammation
Begins right after injury. Typically lasts 4-6 days. Characterized by host of cells infiltrating wound site. Many are inflammatory cells such as leukocytes and macrophages. Bacteria present are destroyed by leukocytes. Cleans wound if cellular debris.
Describe proliferation
Typically last several weeks. In open wound, granulation tissue forms as red beefy buds or granules of tissue. Tissue consists of macrophages, fibroblasts, immature collagen, blood vessels. Fibroblasts stimulate production of collagen which give tissue it’s tensile strength and ultimately structure.
Describe Remodeling or maturation
Can lSt from 21 days to months or years, collagen fibers reorganize, remodel and mature, gaining tensile strength. This process continues until the scar tissue has regained 80% of skins original strength.