Wounds, First Aid 

Scrapes are small surface blood vessels that have torn. They are usually fairly shallow and ooze blood. Dirt can often be seen within the broken skin layers.

Cuts can be shallow or deep with a clean edge, such as from a knife cut. Tears have a rough, jagged edge. Cuts and tears are both likely to bleed. Tears are more likely to have dirt in them.

Puncture wounds typically appear as a small but deep hole. It is often difficult to tell how deep a puncture wound is, and these types of wounds usually do not cause much blood.

A wound caused by a foreign object may have an obvious object embedded in it (from a fishhook, from a splinter, from a zipper, etc). Please see first-aid measures specific to a wound in the Splinter or Foreign Object text.