Crime Scene Technicians look for leads by interviewing witnesses and talking to the detectives about the evidence.

What we perceive about persons depends, in part, on their mannerisms and gestures.

The hair shaft is made up of three layers: an outer medulla, a cortex, and an inner cuticle.

Patent fingerprints, or visible fingerprints, are left on a smooth surface when blood, ink, or some other liquid comes in contact with the hands and is then transferred to that surface.

As soon as fingerprints were discovered to be a reliable means of identification, criminals began to devise ways to alter them so they could avoid being identified. American Public Enemy Number One in the 1930s, John Dillinger, burned his fingertips with a torch to change their appearance.

Latent fingerprints, or surface fingerprints, are caused by the transfer of skin onto a surface.

Blood is the circulating tissue consisting of two types of cells: red blood cells and platelets.

Fingerprints are example of biological evidence.

Evidence can be circumstantial or direct.

One of the most important tools of the forensic investigator is the ability to:

All evidence needs to be properly packaged, sealed, and labeled. Liquids and arson remains are stored in:

Forensic derives from the Latin word, forensis, which means:

Whenever two people come in contact with each other, a physical transfer occurs. To a forensic examiner, these transferred materials constitute what is called:

Hair can adhere to clothes, carpets and many other surfaces and be transferred to other locations. This is called:

Hair and Fiber evidence fall under the following evidence

Two methods that can analyze fibers without damaging them are:

The second step in the seven S’s of crime scene is ____________________.

The parts of the hair is compared to a ______________________.

A fingerprint specialist will look for 1 of the 3 main fingerprint patterns, and they also look for ________.

A man was killed while riding his bike late one night. The defendant was charged with failure to stop at the scene of a serious personal injury accident. Which test would be conducted to determine if the defendant's car struck the man?

In western culture, the earliest record of the study of the patterns on human hands comes from:

The imprint of a fingerprint consists of natural secretions of the sweat glands that are present:

Two things a forensic examiner looks for on a fingerprint are the presence of a core and:

Fingerprint arches may be:

While looking at the basic fingerprint patterns can quickly help eliminate a suspect, in order to positively match a print found at a crime scene to an individual, more is needed. Every individual, including identical twins, has a unique fingerprint due to unique ridge patterns called:

A and B proteins are found on the surface of some red blood cells. If a person’s blood contains both the A and the B proteins, then he or she has:

Cast off blood spatter is a __________.

Given blood spatter patterns, it is possible to determine the direction blood was traveling, the angle of impact, and the

If any of the blood does overcome cohesion and separate from the main droplet of blood, it will form small secondary droplets known as

Began the collection of fingerprints in 1856

American gangster that burned his fingertips with acid to change their appearance.

created a way to identify criminals using the anthropometric system

created a system that divided fingerprint records into arches, loops and whorls.

indirect evidence that can be used to imply a fact, but does not directly prove it.

What a person perceives using his or her senses

evidence narrows an identity to a group of persons or things.

first-hand observations such as eyewitness accounts.

Universal Donor

Universal Receiver

carry respiratory gases, mainly oxygen and carbon dioxide.

A force between two unlike surfaces, such as blood and the surface of a wall

Affects blood spatter shape

the protein that makes up the hair shaft

component of hair can be used in nuclear DNA analysis for personal identification

The documented exchange of evidence

Developed the classification of fingerprints.

A) Captured using dental impressions.

Every contact leaves a trace.

Found that the blood from one person did not always freely mix with blood from another person