Osteometry Flashcards

1
Q

osteometry

A
  • study and measurement of human skeleton
  • used in anthropology and archaeology
  • help to determine age, sex, ancestry, and stature
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2
Q

spreading calipers

A

used in obtaining measurements of the cranium

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3
Q

sliding claipers

A

measuring the face and mandible and long bones

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4
Q

craniometry

A
  • quantitative description of skull size and shape
  • provides standardized protocol, comparable marks
  • statistical evaluation of populations
  • measurements in mm
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5
Q

craniometric points

A
  • standardized landmarks on the skull

- allows for comparable data and statistical analysis of populations

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6
Q

unpaired osteometric points

A

falls on the midsagittal plane

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7
Q

paired osteometric points

A
  • on either side of the midsagittal plane

- equidistant to the midsagittal

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8
Q

Frankfort horizontal position

A
  • plane, defined by 3 points, is constrained to be parallel to ground
  • right and left porion
  • left orbital
  • straight line between the top of the ear and the bottom of the eye
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9
Q

cranium measurements

A

24 points

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10
Q

mandible measurements

A

10 points

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11
Q

postcranium measurements

A

44 points

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12
Q

bregma

A

top of the skull where sutures touch

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13
Q

glabella

A

most forward point on the skull, where the forehead overhangs

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14
Q

porion

A

ear hole

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15
Q

orbitale

A

lowest point of eye orbit

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16
Q

why is individual ID important?

A
  • closure
  • official documents
  • corpus delciti (body is evidence a crime occured)
17
Q

medicolegal ID

A

a civil matter tendered in the form of an expert opinion and based on the preponderance of evidence

18
Q

positive evidence

A
  • goal of every forensic case
  • most rigorous scientific standard
  • accepted as absolute biological proof of identity
  • easier to achieve with a single descendent
19
Q

examples of positive evidence

A
  • nuclear DNA match with a known sample
  • finger prints
  • AM/PM radiographic comparisions
  • surgical device with serial numbers
20
Q

presumptive evidence

A
  • based on logic - is it reasonable to conclude?
  • not definitively exclusive - it may match more than one individual
  • assumptions may be false
21
Q

examples of presumptive evidence

A
  • mitochondrial DNA
  • group characteristics of the biological profile
  • concordance between evidence of an antemortem fracture with a documented medical history
  • wallet, tattoo, scar, mole
22
Q

closed event

A
  • know all individuals involved
  • each ID helps subsequent IDs
  • example: plane crash
23
Q

open event

A
  • don’t know all the individuals involved

- example: hurricane