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Forensic Anthropology. By J. Dickens. What does a forensic anthropologist do?. Tries to id decomposed or mutilated bodies and analyze skeletal remains Determines if bones are human or not What is the age, sex, race? What is the COD?. Terms.

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what does a forensic anthropologist do
What does a forensic anthropologist do?
  • Tries to id decomposed or mutilated bodies and analyze skeletal remains
  • Determines if bones are human or not
  • What is the age, sex, race?
  • What is the COD?
terms
Terms
  • Ossification is the formation of bone by the activity of osteoblasts and minerals.
  • Tuberosity is the knot on the side of the elbow
  • Taphonomy is the study of changes to biological organisms between death & discovery
changes with age
Changes with age
  • The epiphyses are the growing end of long bones. They are soft and cartilaginous during the growing period but gradually harden into solid bone and fuse with the main shaft of the bone as adulthood is reached.
changes come with age
Changes come with age
  • 17-20 yo- bones of upper limbs becoming completely ossified
  • 18-23 yo bones of lower limbs becoming completely ossified
  • 23-25 yo bone of the sternum, clavicles, and vertebrae become completely ossified
  • Female aging of the skeleton is usually about 1 year ahead of the male
skulls
Skulls
  • Sutures are at the top of the skull
  • Infants have large gaps. These gaps close up after the age of 30. This fusing process occurs in a particular sequence beginning from the inside of the skull and working outwards
  • Complete absence of closure indicates that the skeleton is less than 30 yo
female vs male skull
Less pronounced muscle attachment

Less pronounced ridge

globular frontal bone

shallow palate

More pronounced muscle attachment

more pronounced ridge

slanting frontal bone

deep palate

Female VS Male Skull
slide12
Face
  • Females have less sloping mid-foreheads, more pointed nose, smaller, more rounded chin, smaller teeth
slide13
A) Male cranial mass more blocky & massive
  • B)Male temporal ridge is more square shaped and prominent
  • C) female supraorbital margin is sharper, males is round & dull (above eyes)
  • D Zygomatic bone more pronounced in males
slide14
E) Mandible of female is rounded, male square
  • F) Male forehead (frontal bone) is more slopping & lower
  • G) Male has a deeper cranial mass
  • H) Supercilary arch is larger and more pronounced in men
slide15
I) Males gonion most posterior inferior point on angle of mandibleis more flared out and sharply angled
  • J) Teeth larger in males
pelvic cavity
Pelvic Cavity
  • In the female the upper end of the pelvis is tilted forward, the sacrum is shorter & wider with less curvature, coccyx is more movable & tilted backward, width of pelvis is greater, more spacious. It has an oval to round shape while the mans is more heart shaped
  • Pubic arch is greater than 100 degrees
vitruvian man
Vitruvian Man
  • Palm is width of 4 fingers
  • foot is the width of 4 palms
  • length of a man’s outspread arms is = to his height
  • hairline to bottom of chin is 1/10 height
  • height =4 cubits or 24 palms
  • elbow to tip of hand is 1/5 height
porportions cont
Porportions Cont.
  • Length of hand is 1/10 height
  • bottom of chin to nose is 1/3 length of face
  • hairline to eyebrows is 1/3 length of face
  • length of ear is 1/3 length of face
more ratios
More ratios
  • Foot to height… divide the length of a person’s left foot by height, multiply by 100 Results should be about 15.. Length of foot is approximately 15% of height
  • height in inches=(1.880 X femur length) + 32.010 Males… for females height in inches =(1.945 X femur length) + 28.679