ANTHROP 3FA3 Lecture Notes - Lecture 3: Appendicular Skeleton, Axial Skeleton, Shoulder Girdle

• School: McMaster University
• Department: Anthropology
• Course: ANTHROP 3FA3
• Professor: Rebecca Gilmour

Document Summary

Axial skeleton: the skull: 22 bones in the skull, including 3 tiny ossicles in each ear: incus, stapes, malleus, skull= cranium + mandible, cranium: from the top teeth and up, sutures: A type of joint in the skull. Fuse together with age: mandible: where lower teeth are housed. Articulates behind the ear: teeth: adults have 32 teeth (usually) Crown: some teeth begin developing in utero. Starts at the crowns (chewing surface), ends at the tips of the roots (in your jaw) Form in childhood & preserve biochemical (isotopic) evidence for the childs geographic location and die: hyoid bone: only bone that doesn"t articulate with other bones. If we die of strangulation, this bone often breaks: thoracic cage. Ribs (12 pairs: tubercle, head, shaft. Sternum: manubrium, body & xyphoid process: articulate with each other and with the ribs. Vertebrae: 7 cervical (neck): delicate, hold our head up, atlas (hold head up) and axis (movement)