Fingerprinting Chapter 4 Quiz

Questions and Answers

What is anthropometry?

The study of the proportions and/or measurements of the human body.

What type of fingerprint pattern has one or more ridges enter on one side and exit on the same side?

Delta

Whorl

Arch

Loop (correct)

What is a delta in fingerprint analysis?

A small pattern point where two lines diverge.

What is the core of a fingerprint?

The small, central point found in fingerprint patterns. Signup and view all the answers

What percentage of people have a whorl fingerprint pattern?

30% Signup and view all the answers

What is the description of an arch fingerprint pattern?

Ridges enter on one side and exit on the opposite side. Signup and view all the answers

What are fingerprints?

Individualized impressions used in identifying people. Signup and view all the answers

What is a micron?

A measurement of one millionth of a meter. Signup and view all the answers

What does dactyloscopy refer to?

The study of fingerprints. Signup and view all the answers

What is a latent print?

A fingerprint that you cannot see with the naked eye. Signup and view all the answers

What is ninhydrin used for?

A biochemical reagent that produces a purple color. Signup and view all the answers

What are bifurcations?

Indentations shaped like a two-pronged fork. Signup and view all the answers

What does minutiae refer to?

The characteristics of ridges found in fingers. Signup and view all the answers

What is a plastic print?

A molding of a fingerprint. Signup and view all the answers

What characterizes a visible print?

A print that has touched a colored substance. Signup and view all the answers

What is a plain arch fingerprint pattern?

A pattern with a smooth flow. Signup and view all the answers

What defines a tented arch fingerprint pattern?

A pattern with a smooth flow but has a more prominent rise. Signup and view all the answers

What is an ulnar loop?

A loop that opens towards the pinky. Signup and view all the answers

What is a radial loop?

A loop whose opening is towards the thumb. Signup and view all the answers

What is an accidental whorl?

A whorl that does not fit into other pattern categories. Signup and view all the answers

What is a double loop whorl?

Two different loops that have two different cores. Signup and view all the answers

What characterizes a central pocket whorl?

A minimum of two deltas and one ridge. Signup and view all the answers

Who developed the anthropometric system?

Alphonse Bertillon. Signup and view all the answers

What is the Henry Classification used for?

The method used to sort fingerprints. Signup and view all the answers

Study Notes

Fingerprinting Concepts

Anthropometry: Study of human body proportions and measurements; derives from Greek meaning "man."
Loop: Predominant fingerprint pattern where ridges enter and exit the same side; found in 65% of people.
Delta: Diverging point in fingerprint patterns; each individual has at least one.
Core: Central point in fingerprint patterns; varies in shape and size, not always present.
Whorl: Fingerprint pattern with ridges forming a complete circle; observed in 30% of the population.
Arch: Pattern where ridges enter on one side and exit on the opposite side; only 5% of people have this pattern.
Fingerprints: Unique impressions crucial for individual identification; considered a reliable forensic tool.
Microns: Measurement unit equating to one millionth of a meter; important for measuring the fine details of fingerprints.
Dactyloscopy: Scientific study of fingerprints; originated in the 16th century.
Latent Print: Invisible fingerprints to the naked eye; often require special techniques like tape lifting for collection.
Ninhydrin: Biochemical reagent that reveals fingerprints by turning them purple, known as Ruhemann's purple.
Bifurcations: Two-pronged fork-shaped indentations in fingerprint ridges; common feature in fingerprint analysis.
Minutiae: Specific characteristics of fingerprint ridges; detail-oriented aspect of fingerprint identification.
Plastic Print: Physical impression of a fingerprint, often created in materials like wax or clay; critical for suspect identification.
Visible Print: Fingerprints made visible by touching colored substances, such as blood or ink.

Fingerprint Patterns

Plain Arch: A smoother arch pattern; more common variant among arches.
Tented Arch: An arch with a notable rise; recognized as a rarer arch type.
Ulnar Loop: A loop opening towards the pinky finger; indicates the loop pattern's orientation.
Radial Loop: Loop that opens towards the thumb; distinct in its arrangement.
Accidental Whorl: A uniquely-shaped whorl that does not conform to standard categories; considered to be coincidental in formation.
Double Loop Whorl: Features two distinct loops, each having its own core; relatively common fingerprint pattern.
Central Pocket Whorl: Defined by having at least two deltas and one ridge; distinct personal characteristic.

Historical and Classification

Alphonse Bertillon: Innovator of the anthropometric system for identification purposes; served as a French police officer.
Henry Classification: A method for organizing fingerprints; remains a fundamental tool in forensic science today.

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Description

Test your knowledge on key concepts from Chapter 4 related to fingerprinting! This quiz covers important terms and definitions such as anthropometry, loop patterns, and deltas. Perfect for students studying forensic science or criminal justice.