Wound Healing - Anatomy and Phisiology

What are the three things wound healing depends on?

Age of the skin, type of tissue damaged, the severity of the injuries

What are the two types of healing

regeneration and fibrosis

Describe Fibrosis wound healing

The formation of scar tissue made of dense connective tissue

Describe Regeneration wound healing

replacement of the destroyed tissue by the same type of cells.

What is the first step of wound healing?

Permeability of the capillaries

What contents are brought to the wound and what is their purpose?

Blood and Liquid. They contain clotting proteins.

What is the purpose of clotting proteins

Stop blood loss, hold edges of the wound together, prevent bacteria and other substances from entering the wound

What does the dried clot become at the surface?

A Scab

What is the second stage of wound healing?

Formation of granulosm tissue

What does granulosm tissue consist of?

New capillaries (grow into damaged areas), phagocytes (eats away at the scab), Fibroblasts (collagen producing cells)

What is the third stage of wound healing?

Regeneration

What happens beneath the scab during the regeneration stage?

surface epithelium makes its way across the granulosm tissue

What happens when the scab falls off?

Collagen may form a visible white line

What different about the new tissue formed in wound healing?

It is more elastic and is avascular