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  2. Spinal column - Wikipedia

    en.wikipedia.org/wiki/Spinal_column

    The upper cervical spine has a curve, convex forward, that begins at the axis (second cervical vertebra) at the apex of the odontoid process or dens and ends at the middle of the second thoracic vertebra; it is the least marked of all the curves. This inward curve is known as a lordotic curve. A thoracic spine X-ray of a 57-year-old male.

  3. Cervical vertebrae - Wikipedia

    en.wikipedia.org/wiki/Cervical_vertebrae

    In humans, cervical vertebrae are the smallest of the true vertebrae and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process, through which the vertebral artery, vertebral veins, and inferior cervical ganglion pass. The remainder of this article focuses upon ...

  4. Kyphosis - Wikipedia

    en.wikipedia.org/wiki/Kyphosis

    Kyphosis (from Greek κυφός (kyphos) 'hump') is an abnormally excessive convex curvature of the spine as it occurs in the thoracic and sacral regions. [1] [2] Abnormal inward concave lordotic curving of the cervical and lumbar regions of the spine is called lordosis.

  5. Vertebra - Wikipedia

    en.wikipedia.org/wiki/Vertebra

    Each vertebra (pl.: vertebrae) is an irregular bone with a complex structure composed of bone and some hyaline cartilage, that make up the vertebral column or spine, of vertebrates. The proportions of the vertebrae differ according to their spinal segment and the particular species.

  6. Lordosis - Wikipedia

    en.wikipedia.org/wiki/Lordosis

    Being less common than lumbar hyperlordosis [citation needed], hypolordosis (also known as flatback) occurs when there's less of a curve in the lower back or a flattening of the lower back. This occurs because the vertebrae are oriented toward the back of the spine, stretching the disc towards the back and compressing it in the front.

  7. Spinal posture - Wikipedia

    en.wikipedia.org/wiki/Spinal_posture

    Looking directly at the front or back of the body, the 33 vertebrae in the spinal column should appear completely vertical. From a side view, the cervical (neck) region of the spine (C1–C7) is bent inward, the thoracic (upper back) region (T1–T12) bends outward, and the lumbar (lower back) region (L1–L5) bends inward.

  8. Scoliosis - Wikipedia

    en.wikipedia.org/wiki/Scoliosis

    Scoliosis (pl.: scolioses) is a condition in which a person's spine has an irregular curve [2] in the coronal plane. The curve is usually S- or C-shaped over three dimensions. [2] [7] In some, the degree of curve is stable, while in others, it increases over time. [3]

  9. Portezuelo Formation - Wikipedia

    en.wikipedia.org/wiki/Portezuelo_Formation

    An incomplete skeleton of an adult individual which includes an almost complete vertebral column, eight cervical vertebrae, 14 dorsal vertebrae (complete series), six sacral vertebrae, thirteen caudal vertebrae, a cervical rib, eleven dorsal ribs; nine haemal arches, sternum, right and left pelvic girdles, and three thoracic mineralized plates.

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