Bloodstain Pattern Analysis Test 1

Accompanying Drop

A small blood drop produced as a by-prouduct of drop formation

Altered Stain

A bloodstain with characteristics that indicate a physical change has occurred

Angle of Impact

The acute angle relative to the place of a target, at which a blood drop strikes the target

Area of Convergence

The area containing the intersections generated by lines drawn through the long axes of individual stains that indicates in two dimensions the location of the blood source

Area of Origin

The three-dimensional location from which 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 in making red blood cells, fibrinogen, platelets, and other clotting factors

Bloodstain

A deposit of blood on a surface

Bloodstain Pattern

A grouping of 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.

Cast-off Pattern

A bloodstain pattern resulting from blood drops released from an object due to its motion

Cessation Cast-off pattern

A bloodstain Pattern resulting from blood drops released from an object due to its rapid deceleration

Directionality

The Characteristic of a bloodstain that indicates the direction blood was moving at the time of deposition

Directional Angle

the angle between the long axis of a spatter stain and a defined reference line of the target

Drop 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 drop stains between two points

Edge Characteristic

A physical feature of the periphery of a bloodstain

Expiration Pattern

A bloodstain pattern resulting from blood forced by airflow out of the nose, mouth, or a wound

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

Forward Spatter Pattern

A bloodstain pattern resulting from blood droops that traveled in the same direction as the impact force

Impact Pattern

A bloodstain pattern resulting from an object striking liquid blood

Insect Stain

A bloodstain resulting from insect activity

Mist Pattern

A bloodstain pattern resulting from blood reduced to a spray of micro-drops as a result of the force applied

Parent Stain

A bloodstain from which a satellite stain originated

Perimeter Stain

An altered stain that consists of the peripheral characteristics of the original stain

Pool

A bloodstain resulting from an accumulation of liquid blood on a surface

Projected Pattern

A bloodstain pattern resulting from the ejection of a volume of blood under pressure

Satellite Stain

A smaller bloodstain that originated during the formation of the parent stain as a result of blood impacting a surface

Saturation Stain

A bloodstain resulting from the liquid portion of blood (serum) that separates during coagulation

Spatter Stain

A bloodstain resulting from a blood drop dispersed through the air due to an external force applied to a source of liquid blood

Splash Pattern

A bloodstain pattern resulting from a volume of liquid blood that falls or spills onto a surface (more volume to it)

Swipe Pattern

A bloodstain pattern resulting from the transfer of blood from a boll-bearing surface onto another surface, with characteristics that indicate relative motion between two surfaces (blood-bearing surface onto non blood bearing)

Target

A surface onto which blood has been deposited

Transfer Stain

A bloodstain resulting from contact between a blood-bearing surface and another surface (wet, bloodied object contacts a secondary surface)

Void

An absence of blood in an otherwise continuous bloodstain or bloodstain pattern

Wipe Pattern

An altered bloodstain pattern resulting from an object moving through a preexisting wet blood stain (blood removed from surface)