Tissue Repair and Scaring

first step of tissue repair

mast cells release histamine that dilates blood vessels and increase blood flow to damaged area

Second step of tissue repair

supply area with platelets which form fibrous clots and neutrophils and macrophages consume bacteria and remove damaged tissue

thirds step of tissue repair

clot hardens to scab and fibroblasts secrete collagen to form granulation tissue that matures into scar tissue

When is repair process completed?

once epithelium has regenerated to normal thickness, blood vessels are restored, and scab has detached.

When tissue repair begins, ______ work to form a mesh-like clot that prevents blood loss.

Platelets

The final phase of wound healing is called?

Remodeling

Blood vessels carry ______ to the site of tissue damage to assist in the repair process.

Platelets

White blood cells called _________ work to consume bacteria and remove damaged tissue and debris.

Neutrophils and macrophages

____ build new tissue by secreting collagen that takes the shape of the original tissue.

Fibroblasts