fingerprint+chapter+notes+ses

Fingerprint- The impression left when the ridges of someones fingers touch things. Consists of natural secretions of the sweat glands that are present in the friction ridges of the skin.

Fingerprint characteristics are named for their general visual appearance and patterns. These are called LOOPS, WHORLS, and ARCHES 65% have loops, 30% have whorls, and 5 % haver arches

The core is the center of a loop or whorl. Delta- is a triangular region located near a loop

Every individual has a unique fingerprint resulting from unique ridge patterns called minutiae ( because the details are so small)

There are about 150 individual ridge characteristics on the average full fingerprint.

Patent fingerprints- visible prints, left on smooth surface when blood, ink, or some other liquid comes in contact with the hands and is then transferred to that surface.

Plastic Fingerprint- actual indentations left in some soft material such as clay, putty, or wax

Latent fingerprint- hidden prints, caused by the transfer of oils and other body secretions onto a surface

Fingerprints can be temporarily alter their fingerprints but they eventually come back