Axial Skeleton Skull, Thoracic, Vertebral Column.

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Presentation transcript:

Axial Skeleton Skull, Thoracic, Vertebral Column

The Axial Skeleton – the vertebral column. 7 Cervical Vertebra 12 Thoracic Vertebrae 5 Lumbar Vertebrae 5 fused Sacral Vertebrae 4 fused Coccyxl vertebrae

Cervical C 1 -C 7 Thoracic T 1 -T 12 Lumbar L 1 -L 5 5 sacral 4 Coccyx What are the names of the 5 groups of vertebrae and how many are in each group?

SPINAL CURVATURE Stand up!

Identify the different parts of the vertebrae Spinous process Transverse process Body Vertebral foramen

Vertebral disks are found between the body portions of individual vertebrae – this video shows a herniated disc. VIDEO

Atlas (C1) – Superior view

Axis (C2) – superior view

Smallest, lightest, vertebral foramen is traingular, spinous process is short and bifurcated. Turn to your neighbor and ask if you may feel their C7. Cervical vertebrae Visible through the skin

Thoracic vertebrae Larger body than cervical vertebrae Costal facets articulate with ribs Vertebral foramen are round

Lumbar vertebrae Largest and strongest body. Spinous process is hatchet shaped Spinal cord ends at L2

The sacrum Body of first sacral vertebrae Ala Transverse ridges Apex Coccyx Median Sacral crest Posterior Sacral foramina Sacral canal Body Superior articular process Lateral Sacral crest Sacral hiatus Formed from 5 fused vertebrae Anterior Sacral foramina

WHAT KIND OF VERTEBRAE IS THIS?

Sternal Angle Ribcage/Thoracic cage True ribs attach directly to the sternum by their own cartilage False ribs either attach in directly to the sternum or not at all. Costal = Ribs

The ribs