Forensic Science and Blood Analysis

These flashcards cover key concepts related to forensic science, the role of antibodies and antigens in blood, as well as bloodstain pattern analysis.

What does Locard's Exchange Principle state?

When a criminal comes in contact with an object or person, a cross-transfer of evidence occurs.

Who established the first police crime lab?

Edmond Locard in 1910.

What type of teeth are generalised to process both meat and fibrous plant foods?

Human teeth.

What are the functions of canine teeth?

Tearing.

What are the primary functions of incisors?

Biting and cutting.

What term refers to baby teeth?

Deciduous Dentition.

What is the order of eruption for permanent teeth?

Incisor, canine, premolar, and molar.

What are antibodies?

Proteins found in plasma that are part of the body's natural defenses.

What do antigens determine?

They determine your blood group based on genetic inheritance.

What blood group has red blood cells that carry A antigen?

Blood group A.

Who can a person with blood group A donate blood to?

Blood groups A and AB.

What do shoeprints help police determine?

Type, size, and brand of the suspect's shoes.

What chemical is used to locate traces of blood at a crime scene?

Luminol.

What are passive bloodstains?

Patterns created from the force of gravity.

What type of bloodstain pattern occurs when a force is applied to the blood source?

Projected Bloodstains.

What is a parent drop in blood spatter analysis?

The droplet from which a satellite spatter originates.

What can satellite spatters help determine in blood spatter analysis?

The direction from which the blood traveled.

What does it mean if blood spatter is classified as a wipe pattern?

It is created from an object moving through a bloodstain.

What are the three main types of bloodstains?

Passive, projected, and contact bloodstains.

What is an example of a projected bloodstain?

Arterial spurting.

What is created when a wet, bloody object contacts a target surface?

Transfer or contact bloodstains.