Fin Notes Bone Bonanza Lab Forensic Science 11614

Fin Notes Bone Bonanza Lab Forensic Science 11/6/14

Drill Look 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. ]

Objective IWBAT Identify the bones of the skeleton Determine age and gender of a skeleton

Sex Characteristics of Pelvis Male and Female

Male and Female Pelvis Male Heavy and Thick Large Well marked Deep Points of Comparison General Structure Joint Surfaces Female Muscle Attachment Greater Pelvis Rather indistinct Shallow Light and thin Small

Male and Female Pelvis Heart shaped Comparatively small The superior surface of the body spans nearly half the width of the sacrum. Points of Female Comparison Pelvic Inlet Circular Pelvic Outlet First Piece of Sacrum Comparatively Large The superior surface of the body spans almost 1/3 the width of the sacrum.

Male and Female Pelvis Male Points of Female Comparison Long, narrow, Sacrum with smooth concavity Less than 90 degrees Small and deep Short wide, flat, curving forward in lower part Pubic Arch Greater than 90 degrees Sciatic Notch Wide and shallow

Skull Dimorphisms Male and Female

Male and Female Skulls Male Points of Comparison Heavier and General more rugged Architecture Squared, small Eye Openings Female Prominent and Brow Ridges heavy Heavier and Cheekbones laterally arched Smooth and flat Lighter and less rugged Rounded, large Lighter, lack lateral arching

Male and Female Skulls Male Occipital bump at the base of the skull Letter U Sloping, less round Larger, more blunt Points of Female Comparison Occipital Almost non. Condyle/ existent Nuchal Ridge Chin Shape Letter V Forehead Vertical, fuller Mastoid Process Smaller, more pointed

Bone Bonanza Lab You 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 Lab You and a partner (your choice) will work on this lab. Materials One packet per pair Plain sheet of white paper Scissors Glue 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.

Closure How can you tell if someone was right or left handed? List some ways to distinguish between male and female bones