Divisions of the Skeletal System
Axial Skeleton
- Skull, ribs, sternum, costal cartilage, vertebrae, sacrum, coccyx - 80 bones total
Sternum (24 ribs)
- provides support - has a lot of surface area for muscle support - permits limited movement, but are very strong
Skull
22 total - 8 cranial, 14 facial
Vertebral Column
24 vertebrae (7 cervical, 12 thoracic, 5 lumbar), sacrum, coccyx
Skull
6 auditory ossicles within temporal bones - Malleus, Incus, and Stapes
Axial Skeleton
longitudinal axis of the body
Hyoid bone
part of the axial skeleton
Thoracic cage
sternum and 24 ribs
Appendicular Skeleton
supports the limbs and connects them to the trunk