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Forensic%20Anthropology

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Title: Forensic%20Anthropology


1
Forensic Anthropology
  • By J. Dickens

2
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?

3
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

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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.

6
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

7
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

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10
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

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12
Face
  • Females have less sloping mid-foreheads, more
    pointed nose, smaller, more rounded chin, smaller
    teeth

13
  • 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

14
  • 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

15
  • I) Males gonion most posterior inferior point on
    angle of mandibleis more flared out and sharply
    angled
  • J) Teeth larger in males

16
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

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20
Vitruvian Man
  • Palm is width of 4 fingers
  • foot is the width of 4 palms
  • length of a mans 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

21
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

22
More ratios
  • Foot to height divide the length of a persons
    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

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