September 19th (Fingerprint).docx

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Department
Forensic Science
Course
FSC239Y5
Professor
Wade Knaap
Semester
Fall

Description
thSeptember 19 2013WHAT IS A FINGERPRINTAn impression left on a surface by the ridges called friction ridges of the skin on the fingersIn Ink and on Livescan as in rolled ten prints taken when an offender is bookedIn other materials fingerprint secretion sweat dirt blood paint etc left at crime scenesFRICTION RIDGE IDENTIFICATIONRidgeology The study of the uniqueness of friction ridge structures ad their use for person identificationHANDVOLAR PAD FORMATION DURING GESTATION6 wks hand is a apddellike formvolar pads little pads of fat can be seen8 wks fingers separate10 wks digital pads are dinstinct12 wks friction ridges start to developBIOLOGYEasier for gripEach ridge has single row of poresOpenings for sweat glands ductsRelease sweat onto surface of ski
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