Test 3 Identifying the Sex- Pelvis

Question 1

Importance?

Answer 1

Identify a victim

Question 2

Biological differences btw males and females (2)

Answer 2

• Size
• Architecture

Question 3

Size

Answer 3

Average males are bigger and more heavily built than females
- Males= 8% larger/ Females are 92% the size of males

Question 4

Architecture

Answer 4

The Pelvis of females are wider than those of comparable size males

Question 5

Accuracy with the bones in hand (4)

Answer 5

• Entire skeleton: 90-100%
• Pelvis: 90-95%
• Skull: 80-90%
• Limbs: 80%

Question 6

3 Bones in Pelvis

Answer 6

• Right and Left Os Coxae
• Sacrum

Question 7

Each Os coxae as three bones

Answer 7

• Ilium
• Ischium
• Pubis
  All fuses after the 12th year

Question 8

Anthroposcopic traits (7)

Answer 8

• Size
• Shape
• Pelvic inlet
• Subpubic angle
• Obturator foramen
• Greater sciatic notch
• Sacrum

Question 9

Anthroposcopic traits- Size

Answer 9

Male= Large
Female= Small and gracile

Question 10

Anthroposcopic traits- Shape

Answer 10

Male= High, narrow, more like a square
Female= Short, wide, rectangle

Question 11

Anthroposcopic traits- Pelvic inlet

Answer 11

Area enclosed by the Os coxae and the sacrum when viewed superiorly
M= Heart-shaped
F= Circular or Elliptical

Question 12

Anthroposcopic traits- Subpubic angle

Answer 12

M= V shaped and more pronounced angle
F= U shaped and smooth angle

Question 13

Anthroposcopic traits- Obturator foramen

Answer 13

M= Larger and more oval
F= Smaller and more triangular

Question 14

Anthroposcopic traits- Greater sciatic notch

Answer 14

M= Narrow
F= Wide

Question 15

Anthroposcopic traits- Sacrum

Answer 15

M= Long and narrow
F= Shorter and broader

Question 16

Ischium-Pubic Index

Answer 16

(Pubic length/Ischium length) x 100
- Ancestry not know: Below 84% = Male
Above 94% = Female
- Caucasian (accuracy= 91%): Under 91% = Male
Above 95% = Female
- African (accuracy= 83%): Under 83% = Male
Above 88% = Female