Fin NotesBone Bonanza Lab
Forensic Science 11/6/14
DrillLook at the skeletons on the board. What is
wrong with them? List bones that are missing/misplaced.(They can wear hats and be colorful if they want!)
[That’s not what I’m talking about.]
IWBAT Identify the bones of the skeletonDetermine age and gender of a skeleton
Objective
Sex Characteristics of Pelvis
Male and Female
Male Points of Comparison
Female
Heavy and Thick
General Structure
Light and thin
Large Joint Surfaces Small
Well marked Muscle Attachment
Rather indistinct
Deep Greater Pelvis Shallow
Male and Female Pelvis
Male Points of Comparison
Female
Heart shaped Pelvic Inlet Circular
Comparatively small
Pelvic Outlet
Comparatively Large
The superior surface of the body spans nearly half the width of the sacrum.
First Piece of Sacrum
The superior surface of the body spans almost 1/3 the width of the sacrum.
Male and Female Pelvis
Male Points of Comparison
Female
Long, narrow, with smooth concavity
Sacrum Short wide, flat, curving forward in lower part
Less than 90 degrees
Pubic Arch Greater than 90 degrees
Small and deep
Sciatic Notch Wide and shallow
Male and Female Pelvis
Skull DimorphismsMale and Female
Male Points of Comparison
Female
Heavier and more rugged
General Architecture
Lighter and less rugged
Squared, small Eye Openings Rounded, large
Prominent and heavy
Brow Ridges Smooth and flat
Heavier and laterally arched
Cheekbones Lighter, lack lateral arching
Male and Female Skulls
Male Points of Comparison
Female
Occipital bump at the base of the skull
Occipital Condyle/ Nuchal Ridge
Almost non-existent
Letter U Chin Shape Letter V
Sloping, less round
Forehead Vertical, fuller
Larger, more blunt
Mastoid Process
Smaller, more pointed
Male and Female Skulls
Bone Bonanza LabYou will separate and reassemble bones of a
male skeleton and a female skeleton.
Sam’s grandparents’ remains have been found, but they’re all mixed up! Help him separate them so he can put them to rest properly.
Read the Background Information
Bone Bonanza LabYou and a partner (your choice) will work on this
lab.
MaterialsOne packet per pairPlain sheet of white paperScissorsGlue stick“Lesson 4-2: Making No Bones About It!” A Lesson
on Skeletal Evidence – REFERENCE, do NOT take!
Put Grandmother on the front of your paper, and Grandfather on the back.
ClosureHow can you tell if someone was right or left
handed?
List some ways to distinguish between male and female bones