BIOLOGY 173 Lecture Notes - Lecture 18: Xiphoid Process, Sternum, Sacrum

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Body: thick, disk shaped anterior part of vertebrae, bears weight. Vertebral arch: pedicles 2 short thick projections which extend posteriorly from body, lamina - flat part that joins to form the dorsal wall of the vertebral arch. Seven processes of vertebral arch: transverse processes (2) lateral projections from laminae, spinous processes (1) sharp process projecting posterior and inferior from midline of lamina, superior articular processes (2) projects upward from laminae. Inferior articular processes (2) projects downward from laminae (articulates with superior articular processes of vertebrae below) Vertebral foramen: hole in the center of a vertebra formed by the union of the body, pedicles, ad lamina. Vertebral articulation: separated by intervertebral disks (fibrocartilage pads) Inferior articular processes of one vertebra join with superior articular process of the next. Intervertebral foramina gaps that separate pedicles of adjacent vertebra: alinement of vertebral foramina forms vertebral canal (houses spinal cord)

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