Lovely Bones

Given the opportunity to sketch a pre-test of his knowledge on bones (prior to a 1st grade class lecture from NP Nadine), Sam came up with the following:

Following the brief medical education program, Sam sketched an update to his understanding of the skeletal system:

When questioned on his decision to include one particular body part in the "pre-test", Sam reasoned that "I guess technically the Butt Crack is not a bone"...