Fingerprint Types Flashcards
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Questions and Answers

What type of fingerprint pattern is characterized by ridges entering on one side and flowing out the other side with a rise in the center, but no deltas?

  • Plain Arch (correct)
  • Radial Loop
  • Tented Arch
  • Ulnar Loop

    • What fingerprint pattern has a spike in the center and no deltas?

  • Plain Arch
  • Tented Arch (correct)
  • Accidental Whorl
  • Double Loop Whorl

    • What is a radial loop?

    A loop fingerprint pattern which enters and exits on the left side of the fingerprint; one delta.

    What is an ulnar loop?

    <p>A loop fingerprint pattern which enters and exits on the right side of the fingerprint; one delta.</p> Signup and view all the answers

    What is a double loop whorl?

    <p>A whorl that has two loops combined in the same pattern, usually opening in opposite directions; two deltas.</p> Signup and view all the answers

    What defines a plain whorl?

    <p>Has two deltas and at least one ridge that makes a complete circuit.</p> Signup and view all the answers

    What is a central pocket loop whorl?

    <p>A whorl with two deltas and at least one ridge that makes a complete circuit, which may be spiral or circular.</p> Signup and view all the answers

    What is an accidental whorl?

    <p>A pattern consisting of a combination of two different pattern types with two or more deltas.</p> Signup and view all the answers

    What is minutia?

    <p>Small ridge characteristics formed during development.</p> Signup and view all the answers

    What does AFIS stand for?

    <p>Automated Fingerprint Identification System.</p> Signup and view all the answers

    What is a Henry Number?

    <p>An identification system designed to give a number to a set of fingerprints based on the number of whorls.</p> Signup and view all the answers

    Define a delta fingerprint.

    <p>A triangular ridge pattern with ridges that go in different directions above and below a triangle.</p> Signup and view all the answers

    What are latent prints?

    <p>Fingerprints that must be developed or dusted as they cannot be seen with the naked eye.</p> Signup and view all the answers

    What are patent prints?

    <p>Fingerprints transferred from the friction ridges on fingers by a foreign substance and are readily visible.</p> Signup and view all the answers

    What are plastic fingerprints?

    <p>Indentations left in soft materials such as clay or wax.</p> Signup and view all the answers

    What is the scientific name for a fingerprint?

    <p>Dactylogram.</p> Signup and view all the answers

    Which animals have fingerprints?

    <p>Koala and chimpanzee.</p> Signup and view all the answers

    What fingerprint pattern has two or more deltas?

    <p>Whorl</p> Signup and view all the answers

    What type of fingerprint pattern has one delta?

    <p>Loop</p> Signup and view all the answers

    What fingerprint pattern has no deltas?

    <p>Arch</p> Signup and view all the answers

    What is the most common type of fingerprint pattern?

    <p>Loop</p> Signup and view all the answers

    The cyanoacrylate (superglue) method of developing fingerprints is used on what types of surfaces?

    <p>Non-porous surfaces.</p> Signup and view all the answers

    The silver nitrate method of developing fingerprints is used on what types of surfaces?

    <p>Porous surfaces.</p> Signup and view all the answers

    Ulnar loops open to which side?

    <p>Pinky.</p> Signup and view all the answers

    What is a bifurcation in fingerprint terminology?

    <p>A fork in a print.</p> Signup and view all the answers

    Fingerprints left in red paint are called what?

    <p>Patent prints.</p> Signup and view all the answers

    Study Notes

    Fingerprint Patterns

    • Plain Arch: Ridges enter on one side, flow to the other with a central wave, no deltas.
    • Tented Arch: Similar to plain arch but has a spike in the center; also contains no deltas.
    • Radial Loop: A loop pattern that enters and exits on the left side, featuring one delta.
    • Ulnar Loop: A loop pattern that enters and exits on the right side, with one delta.
    • Double Loop Whorl: Comprises two loops opening in opposite directions; identified by two deltas.
    • Plain Whorl: Contains two deltas and a complete ridge circuit, resembling a circular pattern.
    • Central Pocket Loop Whorl: Features two deltas with a complete circuit, but no ridge connections within the inner area.
    • Accidental Whorl: A mixed pattern with two or more deltas, combining different types without fitting a category.

    Fingerprint Characteristics

    • Minutia: Small ridge details that develop in fingerprints.
    • Delta Fingerprint: A triangular ridge pattern with diverging ridges above and below a triangle.

    Fingerprint Types

    • Latent Prints: Invisible fingerprints requiring development to become visible.
    • Patent Prints: Visible prints transferred by foreign substances like blood or paint.
    • Plastic Fingerprints: Indentations left in soft materials, such as clay or wax.

    Fingerprint Identification Systems

    • AFIS: Automated Fingerprint Identification System facilitates the storage and retrieval of fingerprint data.
    • Henry Number: Categorizes fingerprints based on the count of whorls.

    General Fingerprint Facts

    • Common Patterns: Loops are the most prevalent fingerprint type.
    • Deltas in Patterns:
      • Two or more deltas signify a whorl.
      • One delta indicates a loop.
      • No deltas are characteristic of arches.

    Fingerprint Development Methods

    • Cyanoacrylate Method: Effective for developing fingerprints on non-porous surfaces.
    • Silver Nitrate Method: Used to develop prints on porous surfaces.

    Miscellaneous

    • Ulnar Loops: These open towards the pinky.
    • Bifurcation: Refers to a fork-like pattern in a fingerprint.
    • Animals with Fingerprints: Notable examples include koalas and chimpanzees.

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    Description

    Explore various types of fingerprint patterns with these flashcards. Learn the differences between plain arch and tented arch patterns, and improve your understanding of fingerprint identification techniques. Ideal for forensic science students and enthusiasts.

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