Forensic Science Exam Study Guide Questions And Answers.

pattern of pigmentation (varies widely in animals while pigmentation in human hair tends to be denser toward the cuticle; animal hair it becomes denser toward the medulla; in animal hair pigments are often found in sold masses called ovoid bodies, especially in dogs and cattle; human hairs are usually one color along the length), the medullary index (in animal hair the medulla is proportionally much thicker than human hair), and cuticle type (rodents and bats have a coronal cuticle with scales that look like a stack of crowns; cats, seals, and mink have scales that are called spinous and resemble petals; human hair has cuticle scales that flattened and narrow, which are called imbricate {Ans: Be able to describe the features that distinguish human from animal hair}lands, grooves, extractor/ejector markings {Ans: How can bullets and cartridges be given individual marks when fired?}They are lifted by dusting surfaces such as drinking glasses, the faucets on sinks, telephones, and the like with a fine carbon powder can make a fingerprint more visible. The chemicals include ninhydrin, cyanoacrylate vapor, silver nitrate, and iodine fuming. {Ans: Describe how fingerprints can be lifted and the chemicals used to view them}used to detect