Anth. 105 Final Exam

Alec Jeffreys
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Terms in this set (34)
Mechanical TraumaWhen applied force exceeds the strength of the tissue (sharp force v blunt force trauma v ballistic trauma)Timing of trauma 3antemortem, perimortem, postmortemMNIminimum number of individuals1- Sex / sexual dimorphism 2- age 3- ancestry/ race 4- statureParts of biological profile 41- pelvis 2-long bones 3- skullparts of the body that make sexual dimorphism apparent- allows for recovery of all physical evidence - maximizes the completeness of body recovery - replicable & defensible proceduresthree benefits of archeological approachTaphonomythe study of organic remains from the time of death to the time of discoveryDecompositionsystematic breakdown of tissue influenced by environment, autolysis (cell death), & animal activity.Autolysisthe spontaneous breakdown of cells as they self-digest1- fresh 2- bloat 3- active decay 4-advanced decay 5- dry remains /skeletonazation5 stages of decomposition- initial insect activity three initial stages include: 1- livor mortis (blood settling causing discoloration) 2- algor mortis (body cooling) 3- rigor mortisdescribe fresh stage of decomplivor mortisthe settling of blood that causes skin color changes and can determine if a body has been movedalgor mortisPost-mortem cooling of the body to the surrounding temperature. Can be determined by liver or rectal temp. Usually drops by about two degrees per hour.rigor mortisstiffness of the body that sets in several hours after death, eventually subsidesPutrifactionCaused by bacterial activity which causes the body to bloatAdipocerefatty substance occurring in corpses left in moist areasSkeletonizationoccurs when the soft tissue is removed from the bones1- temp 2- insect access 3- sunlight v shade 4- humidity 5- geography 6- individual variationfactors affecting decomp - 6TSDTime since deathblow fliesflies that are often first to arrive at the bodyDermisted Beetledo not eat moist flesh and pupate near body often & returnForensic EntomologyThe study of insects and their relation to a criminal investigationintense & increased soft tissue decomposition liquefaction hair mat formation skin cracking disintegrationcharacteristics of active decay 6characteristics of sharp force traumasharp and straight margins blade striae shearing of bone surfaces cut marks saw marks