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