Skeletal system Vertebrae Hyoid bone n Only bone

Skeletal system: Vertebrae

Hyoid bone: n Only bone that does not articulate with another bone

Vertebrae: n n 33 total bones Intervertebral disks are in between each vertebral bone

Vertebral count: n n n Cervical 7 -neck vertebrae that gives us a concave curve Thoracic 12 -chest vertebrae with convex curve Lumbar-5 -lower back with concave curve Sacrum-5 Coccyx-4 -tailbone

Cervical vertebrae: n n Atlas-C 1 -allows us to nod our head to say “yes” Axis-C 2 -allows us to shack our head and say “no”

Vertebral structures: n n n Centrum or body-large disk-like, weight bearing portion found anteriorly Vertebral arch-arch thats found posteriorly-composed of lamina and pedicle with transverse process-forms triangle shape that is very strong Vertebral foramen-canal through which spinal cord passes Transverse processes-two lateral projections Spinous process-single projection found posteriorly Superior and inferior articular processes-projections found lateral to vertebral foramen-from joints between vertebra

Vertebral foramen Transverse process lamina Spinous process centrum pedicle Inferior articular process Superior articular process

Abnormal spinal curvatures: n n n Scoliosis-sideways curvature of lower back Kyphosis-increase in thoracic curvaturehump back Lordosis-increase in lumbar curvaturesway back and stomach out

Spinal cord injury: n n Shift in vertebrae that pinches or severs the spinal cord Slipped disk-pinching of spinal cord

Spinal cord injury