CSI

Angle of Impact - The angle at which a blood drop strikes a surface.

Area of Origin - The three-dimensional location from which blood spatter

originated.

Backspatter Pattern - A bloodstain pattern resulting from blood drops that

traveled in the opposite direction of the external force applied; associated

with an entrance wound created by a projectile.

Blood Clot - A gelatinous mass formed by a complex mechanism involving

red blood cells, fibrinogen, platelets, and other clotting factors.

Bloodstain Pattern - A grouping or distribution of bloodstains that

indicates through regular or repetitive form, order, or arrangement the

manner in which the pattern was deposited.

Bubble Ring - An outline within a bloodstain resulting from air in the blood.

Cessation Cast-off Pattern - A bloodstain pattern resulting from blood

drops released from an object due to its rapid deceleration.

Drip Pattern - A bloodstain pattern resulting from a liquid that dripped into

another liquid, at least one of which was blood.

Drip Stain - A bloodstain resulting from a falling drop that formed due to

gravity.

Drip Trail - A bloodstain pattern resulting from the movement of a source of

drip stains between two points.

Flow Pattern - A bloodstain pattern resulting from the movement of a

volume of blood on a surface due to gravity or movement of the target.

Luminol (C8H7N3O2) - is a versatile chemical that exhibits

chemiluminescence, with a striking blue glow, when mixed with an

appropriate oxidizing agent. Luminol is used by forensic investigators to

detect trace amounts of blood left at crime scenes as it reacts with iron

found in hemoglobin.

Perimeter Stain - An altered stain that consists of the peripheral

characteristics of the original stain.

Platelet - An irregularly shaped cell-like particle in the blood that is an

important part of blood clotting. Platelets are activated when an injury

causes a blood vessel to break. They change shape from round to spiny,

“sticking” to the broken vessel wall and to each other to begin the clotting

process.

Ambient Temperature - The current air temperature

Crop - Pertaining to an animal’s gut or stomach

Forensic - Pertaining to the law

Instar - Each of the successive incremental growth steps terminated by a molt

Pupariation - The immobilization of the postfeeding maggot with the shrinking, hardening, and darkening of its outer skin

Puparium - The hardened outer shell or skin of the final larval instar within which the pupa of the fly develops