Bloodstain Pattern

Question 1

What is Bloodstain Pattern Analysis

Answer 1

An in depth evaluation of the physical bloodstains found in a given scene.

Question 2

three areas BPA is divided into

Answer 2

 Pattern recognition and classification
 The spatial origin or orientation of
particular stains
 Patterns when created as well as aspects
of alteration of the stain as a function of
environmental exposure.

Question 3

The human body contains approximately ______ of blood________ females, which is 8% of your total body weight

Answer 3

1. 5 – 6 liters
2. (4 – 5 liters)

Question 4

_____%total blood loss (internally / externally) is required to cause shock, can lead to death

Answer 4

40

Question 5

A blood loss of approximately___ liters causes incapacitation

Answer 5

1.5

Question 6

T/F
Blood is not effected by the consumption of alcohol when interpreting bloodstain patterns

Answer 6

True

Question 7

What Can Blood Evidence Tell Us

Answer 7

1. Directionality
2. Angle of Impact
3. Area of Origin of Bloodshed
4. Minimum Number of Bloodletting
   Events
5. Sequence of Events

Question 8

Directionality

Answer 8

The direction from which the blood
droplet originated.

Question 9

Angle of Impact

Answer 9

A blood droplet is spherical in shape
while airborne.

Question 10

A blood droplet is _______in shape
while airborne.

Answer 10

spherical

Question 11

Angle of Impact

Answer 11

When blood impacts a surface at different angles, the shape changes

Question 12

Area of Origin

Answer 12

The three-dimensional location from which spatter originated

Question 13

Mist Pattern

Answer 13

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

example gunshot, power tool

Question 14

Cast-off Pattern

Answer 14

1. resulting from blood drops released from an object due to its motion.
2. Hand, Hair, Dog tail

Question 15

Drip Pattern

Answer 15

1. resulting from a liquid that dripped into
   another liquid,
2. at least one of which was blood.

Question 16

Drip Stain

Answer 16

A bloodstain resulting from a falling drop
that formed due to gravity.

Question 17

Drip Trail

Answer 17

resulting from the movement of a source of drip stains between two points.

Question 18

Expiration Pattern

Answer 18

resulting from blood forced by airflow out of the nose, mouth, or a wound.

Question 19

Flow Pattern

Answer 19

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

Question 20

Forward Spatter Pattern

Answer 20

resulting from blood drops that traveled in the same direction as the impact force.

Question 21

Perimeter Stain

Answer 21

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

Question 22

Pool

Answer 22

resulting from an accumulation of liquid blood on a surface

Question 23

Projected Pattern

Answer 23

resulting from the ejection of a volume of blood under pressure.

Question 24

Spatter Stain

Answer 24

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

Question 25

Backspatter Pattern

Answer 25

resulting from blood drops that traveled in the opposite direction of the external force applied

Question 26

Splash Pattern

Answer 26

resulting from a volume of liquid blood that falls or spills onto a surface.

Question 27

Swipe Pattern

Answer 27

resulting from the transfer of blood from a blood-bearing surface onto another surface

Question 28

Wipe Pattern

Answer 28

resulting from an object moving through a
preexisting wet bloodstain.

Question 29

Transfer Stain

Answer 29

resulting from contact between a blood-bearing surface and another surface.

Question 30

Void

Answer 30

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

Question 31

Insect Stain

Answer 31

bloodstain resulting from insect activity

Question 32

Saturation Stain

Answer 32

from the accumulation of liquid blood in an absorbent material

Question 33

Projected Pattern

Answer 33

resulting from the ejection of blood under hydraulic pressure, typically from a breach in the circulatory system.