F

• Finger


  Any of the four digits of the hands other than the thumbs covered by friction skin
• Bulb


  End joint of each finger, where the number of friction ridge patterns appear
• Polydactyl


  Refers to a person having more than required numbers of fingers
• Macrodactyl


  Having enlarged finger
• Microdactyl


  Having small finger
• Ectrodactyl


  Born with missing finger
• Syndactyl


  Side fusion of the finger
• Phalange


  The skeletal finger covered with friction skin
• Sweat pores


  Small opening found anywhere across the ridge surface center
• Sweat duct


  Serves as the passageway for the sweat
• Sweat glands


  Responsible for the reproduction of the sweat
• Type lines


  Diverging ridge that tends to surround the pattern area
• Pattern area


  The core, delta, and ridges appear enclosed by the type lines
• Friction Ridge


  The elevated or hill-like structure/ the black lines with tiny white dots
• Furrow


  The depressed or canal-like structure
• Pores


  Small opening found anywhere across the ridge surface
• Focal Points


  Outermost and innermost terminus
• Core


  The inner terminus or focal point found inside on the center
• STAPLE CORE


  Point located on the shoulder of the recurving ridge
• BAR or ROD core


  Point located at the tip of an ending ridge
• FRAGMENTARY CORE


  Can be a very short ridge or a dot ridge found inside the recurving ridge
• Delta


  Outer terminus found on the center or approximately center of the divergence points
• OPEN DELTA


  Displays any ridge formation
• CLOSE DELTA


  A bifurcating ridge that obstructs or blocks the space
• Fingerprint Pattern Groups


  • Arch Group Patterns
  • Loop Group Pattern
  • Whorl Group Pattern
• Arch Group Patterns


  Fingerprint patterns that have no counting and tracing because they lack the necessary focal points
• Plain Arch


  Enters on one side of the pattern and flows towards the other side
• Tented Arch


  Rising smoothly at the center, meeting at an angle less than 90 degrees
• Loop Group Pattern


  One or more of the ridges enter on either side of the impression then turn around
• Radial Loop


  When the opening end of the loop ridge points in the direction of the thumb
• Ulnar Loop


  Points in the direction of the little finger side
• Whorl Group Pattern


  Patterns that have two or more deltas and the ridges recurve in a circular manner
• Plain Whorl


  Making a complete circuit in the form of a spiral
• Central Pocket Loop


  Has a small inside the loop ridges, sometimes called a composite pattern
• Double Loop


  Two separate and distinct loop formations
• Accidental Whorl


  Combination of two or more different types of patterns