Question

*summarize the steps of healing. cut→bleed→

1. hemostasis: platelets form a

___, it dries out and a
___ is formed.

1. inflammation: mast cells release

___, causing fluid to leak into the tissue. skin
___ (color) and swollen.
___ move into the area and remove dead cells
and bacteria.

1. growth and rebuilding:

___ are released to stimulate cells to divide and regenerate.
___ form fibers that bind the edges of the wound together.
___ extend into the area beneath the scab.

1. remodelling: the

___ falls off. new tissue gains
___ and

Explanation:

1. Hemostasis: Platelets form a clot which dries to form a scab.
2. Inflammation: Mast - cells release substances causing fluid leakage, redness (color) and swelling. Immune cells move in to remove dead cells.
3. Growth and Rebuilding: Fibers bind wound edges and signals are released to stimulate cell division and regeneration. Fibers extend under the scab.
4. Remodelling: The scab falls off and new tissue gains strength.

Answer:

1. Hemostasis: Platelets form a clot that dries out and a scab is formed.
2. Inflammation: Mast cells release substances causing fluid to leak into the tissue. Skin becomes red (color) and swollen. Immune cells move into the area and remove dead cells and bacteria.
3. Growth and Rebuilding: Fibers are released to form and bind the edges of the wound together. Signals are released to stimulate cells to divide and regenerate. Fibers extend into the area beneath the scab.
4. Remodelling: The scab falls off. New tissue gains strength and matures.