PBS 1.1.4 Flashcard Review

Front

What causes passive or gravity blood stain patterns?

Back

Dropping straight down from a source of bleeding.

Front

What type of blood stain is characterized by a stain that transfers from one surface to another?

Back

Transfer stain.

Front

Which blood type is known as the universal recipient?

Back

AB.

Front

What is the Kastle-Meyer Test used for?

Back

It is a presumptive test for blood.

Front

Which blood type has no antigens on its surface?

Back

O Negative.

Front

What is a blunt force trauma injury?

Back

An injury caused by a forceful impact, often resulting in blood stains.

Front

What is radial spatter in bloodstain pattern analysis?

Back

Blood stains that radiate outward from a central point of impact.

Front

What does the term 'elongated tail' refer to in bloodstain patterns?

Back

A blood droplet that has a tail indicating the direction of travel.

Front

What is the significance of blood type O in transfusions?

Back

It is considered the universal donor because it has no antigens.

Front

What is the difference between presumptive and confirmatory tests for blood?

Back

Presumptive tests indicate the presence of blood, while confirmatory tests definitively identify it.