1 / 21

Vertebral Column

Vertebral Column. The Vertebral Column. Provides a column of support bearing weight of the head, neck, and trunk Transfers weight to the lower limbs of the appendicular skeleton Protects the spinal cord Helps maintain an upright body position. Vertebral column. 26 bones 24 Vertebrae

tala
Download Presentation

Vertebral Column

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Vertebral Column

  2. The Vertebral Column • Provides a column of support bearing weight of the head, neck, and trunk • Transfers weight to the lower limbs of the appendicular skeleton • Protects the spinal cord • Helps maintain an upright body position

  3. Vertebral column • 26 bones • 24 Vertebrae • Cervical (7) • Begins at neck and extends inferiorly to the trunk Thoracic (12) superior portion of the back Each articulates with one or more ribs

  4. Vertebral Column Lumbar (5) Inferior portion of the back The 5th one articulates with the sacrum Sacrum (1)- articulates with the coccyx Coccyx (1) tailbone The sacrum and the Coccyx both originally start as separate vertebrae that fuse together throughout puberty and into early adulthood

  5. Spinal Curvature • There are 4 main curves in the spine (cervical, thoracic, lumbar, and sacral). • Most of our weight is anterior to the vertebral column, the curves bring the weight back in line with the axis of the body so that the weight can be transferred to your hips and then the lower limbs

  6. Vertebral Anatomy • Vertebral Body- transfers weight along axis of vertebral column, and are separated by intervertebral discs • Vertebral Arch- Forms the vertebral canal which encloses the spinal cord, spinous process projects posteriorly, you can feel this in your back

  7. Vertebral Anatomy Cont. • Articular processes- allow muscles to attach to vertebra

  8. Vertebral Regions • A capital letter is used to identify region, and a number is used to indicate position within the region (1 is most cranial or superior) • C, T, L, S, Co indicate region

  9. Cervical Vertebrae • Smallest, extend from occipital bone to the thorax • Body is small compared with the size of the the vertebral foramen

  10. Atlas and Axis (C1 and C2) • Atlas C1- holds up the head, articulates with the occipital bone, which allows you to nod. • Axis C2- Articulates with C1, this fusion is called the dens, and it allows for a pivoting motion

  11. Thoracic Vertebrae (12) • Distinct heart shaped body • Have a smaller vertebral foramen • Articulate with the ribs

  12. Lumbar vertebrae • Largest of the vertebrae, smaller vertebral foramen • Bear most of the weight

  13. Sacrum and Coccyx • Sacrum consists of 5 fused bones that fuse shortly after puberty • Protects the reproductive, digestive, and urinary organs • Coccyx consists of 3-5 fused vertebrae that usually begin fusing by age 26 • Provides an attachment site for muscles

  14. Use pg. 216 to complete the following table

More Related