Bones and Other Structures of the Vertebral Column
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Number of Adult Vertebrae | show 🗑
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show | Vertebral column consists of 33 seperate bones, nine inferior bones fuse to form 2 composite bones, sacrum and coccyx.
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show | First 7 of the vertebral column, located in the neck.
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show | The 12 vertebrae below the 7 cervical vertebrae, articulate with the ribs.
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show | The 5 vertebrae below the thoracic vertebrae and directly superior to the sacrum.
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Sacrum | show 🗑
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show | Terminus of the vertebral column, commonly called the tailbone.
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Spinal Curvatures | show 🗑
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Scoliosis | show 🗑
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show | "Hunchback", dorsally exaggerated thoracic curvature, common in elderly people due to osteoporosis, may also indicate tuberculosis of the spine, rickets or osteomalacia.
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Lordosis | show 🗑
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Anterior and Posterior Longitudinal Ligaments | show 🗑
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Nucleus Pulposus | show 🗑
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show | Strong collar composed of collagen fibers superficially and fibrocartilage internally that surrounds the nucleus pulposus of each vertebrae, limits expansion.
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show | Usually involves rupture of the anulus fibrosis followed by protrusion of the spongy nucleus pulposus, if protrusion compresses spinal cord or nerves numbness/pain may result, generally treated w/ moderate exercise, massage, heat-therapy, painkillers.
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Vertebral Structure | show 🗑
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show | The vertebral body, forms the weight bearing portion of the vertebrae.
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Vertebral Arch | show 🗑
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show | Short bony pillars that project post. from the vertebral body and form the sides of the vertebral arch.
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show | Flattened plates that fuse medially and complete the vertebral arch.
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show | Median posterior projection arising at the junction of the 2 laminae, provides attachment site for muscles and ligaments that move and stabilize the vertebral column.
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Transverse Process | show 🗑
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Superior and Inferior Articular Processes | show 🗑
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show | Notches on the pedicle superior and inferior borders, provide lateral openings that allow passage of spinal nerves.
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show | Body is oval, except in C7 spinous process is short, projects directly back and is bifid, vertebral foramen is large and triangular, each transverse process contain transverse foramen through which arteries pass to serve the brain.
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Vertebra Prominens | show 🗑
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show | C1 vertebrae, has no body and no spinous process, ring of bone consisting of the ant. & post. arches and lateral mass on each side.
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Atlas Lateral Masses | show 🗑
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Axis | show 🗑
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show | Also called odontoid process, cradled in the anterior arch of the atlas by tansverse ligaments, acts as a pivot for the rotation of the atlas.
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show | Heart-shaped body that contain 2 facets for articulating with the ribs (T10-T12 contain 1), vertebral foramen is circular, spinous process is long and points downward.
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Lumbar Vertebrae Regional Characteristics | show 🗑
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Sacrum | show 🗑
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Sacroiliac Joint | show 🗑
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show | Antero-superior margin of the first sacral vertebra, bulges anteriorly into the pelvic cavity, body's center of gravity lies about 1 cm posterior
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show | Continuation of the vertebral canal, created by the failure of the laminae to fuse medially.
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Sacral Hiatus | show 🗑
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Created by:
nursingstudent1999
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