Heal means to make or become well again.
If something hard, such as a bone, fractures, or is fractured, it breaks or cracks.
Blood vessel is any of the tubes through which blood flows in the body.
Scrape is a slight injury caused by having your skin rubbed against something rough.
Platelet is a very small cell in the blood that makes the blood thicker and stops it from flowing when you cut yourself.
Scab is a rough surface made of dried blood that forms over a cut or broken skin while it is healing.
Stitch means to sew two things together.
Tissue is a group of related cells.