Forensics--Blood

Blood Spatter

100

A projected blood drop that strikes a surface at a sharp angle will result in this extending from the drop, which points in the direction of travel

What is a tail

200

This type of blood spatter results from blood that is flung from a weapon or object.

What is cast-off

300

Blood that is simply dripped straight down onto a surface produces this shape of spatter. 

What is round/circular?

400

This kind of impact produces a spatter pattern with the smallest specks, almost like a spray of blood.

What is gunshot/ high velocity?

500

In addition to diameter, the presence, shape and number of these are clues as to what height blood dropped from. 

What are satellites and/or spines?

Blood Composition

100

Among the solids in blood, this type of cell is the most populous, numbering over 600 for every white blood cell.

What is a red blood cell?

200

Blood is made up of platelets, red blood cells, white blood cells, and this yellowish fluid in which these solids are suspended

What is plasma?

300

These Y-shaped proteins are made by white blood cells and are dissolved in the liquid part of blood. 

What are antibodies?

400

What do blood cells have on their surface that determine blood type?

What are antigens

500

DAILY DOUBLE:  Blood components

What is white blood cell

Testing and Typing

100

This is needed to confirm that a red stain truly is blood

what is a confirmatory test?

200

This test is used to determine if a substance is blood-- pink being a positive result

What is Kastle Meyer?

300

This is the blood type of someone who tests negative for both A and B antigens, and negative for the rhesus factor.

What is O-?

400

What happens when type A+ blood is mixed with anti-Rh antibodies?

What is clumping/agglutination?

500

What is the blood type of suspect 1 if his blood clumps with anti-B and anti-Rh antibodies, but does not clump with anti-A antibodies? 

What is Type B+?

Bloodstain Patterns

100

type of stain forms when blood drips from a wound?

What are passive drops?

200

stain occurs when a bloody object contacts a clean surface with little movement

what is transfer stain

300

 2D location where blood drop paths intersect.

What is the point of convergence?

400

Air pressure forcing blood out of the mouth or nose

What is expirated blood?

500

An object blocked the blood spatter and leaves a segment missing

What is a void or shadow?

Miscellaneous

100

Blood typing is considered this type of evidence, since many people have the same blood type. 

What is class evidence?

200

This blood type is considered the universal donor?

What is Type O.

300

This factor, named after a monkey, is indicated by a plus sign or minus sign after the letter blood type

What is Rhesus or Rh?

400

DAILY DOUBLE: 

This protein indicates the presence of positive (+) blood type?

What is Rh antigen?

500

This is the rarest blood type.

What is AB or AB-?