Fingerprints

Radial Loop

loop that opens towards the thumb

Latent

prints are impressions left by friction ridge skin on a surface. They are invisible to the naked eye.

Central Pocket Loop

At least one ridge that makes a complete circuit; 2 deltas, 1 core; NOT symmetrical

Plain Whorl

At least one ridge that makes a complete circuit; 2 deltas, 1 core; symmetrical.

AFIS

Automated Fingerprint Identification System. Scans fingerprints electronically and plots the positions of their ridge characteristics, comparing them with prints in a database.

Double Loop Whorl

2 loops combined into one fingerprint; 2 deltas, 2 cores, "S" appearance

Superglue Fuming

A technique for visualizing latent fingerprints on nonporous surfaces by exposing them to cyanoacrylate vapors called __

Accidental Whorl

All other prints that don't fit into any other category.

Plain Arch

Formed by ridges entering from one side of the print, rising slightly and exiting on the opposite side.

A fingerprint is made up of _ and _

Ridges and furrows

Tented Arch

Rise sharply upward causing the center of the print to look like a tent; <90

Natural oils and dirt

__ leaves behind the impressions that result in fingerprints.

Arch

a fingerprint pattern in which the ridge pattern originates from one side of the print and leaves from the other side

Ulnar Loop

a loop that opens toward the little finger

Whorl

fingerprint pattern with at least two deltas and a core.

Loop

fingerprint pattern with one or more ridges entering from one side, curving, then going out on the same side entered. There is one delta present.