F

a statement about a phenomenon that is objectively verified, and thus, considered to be true

animals

the thigh bone

stage in human development that lasts between 10 weeks after conception until birth

lateral (outer) bone of the lower leg

the movement that results in the angle between skeletal elements getting smaller. Different muscles act to flex or extend different skeletal elements. See also extension

plants

a hole or opening in a tissue, such as bone; usually accommodates the passage of a blood vessel or a nerve

the large hole in the occipital bone that allows for the passage of the spinal cord to the brain. The placement of the foramen magnum in the skull is an indication of bipedal or quadrupedal behavior

formed when hard elements of a skeleton, such as shells, teeth and bones, are quickly buried by sand or mud. Over the thousands or millions of years these elements are buried, the organic components of the skeleton are replaced with minerals. The transition from bone to stone forms a fossil.

a break or crack in a bone or cartilage

a plane defined by the most inferior points on the anterior margins of the left orbit and the middle points of the upper part of the left and right external auditory meatus (porion); also called the Plane of Virchow.

the forehead

the study of the relationship between an organism’s lifestyle and its anatomy