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  2. Vertebral column - Wikipedia

    en.wikipedia.org/wiki/Vertebral_column

    The vertebral column, also known as the spinal column, spine or backbone, is the core part of the axial skeleton in vertebrate animals.The vertebral column is the defining and eponymous characteristic of the vertebrate endoskeleton, where the notochord (an elastic collagen-wrapped glycoprotein rod) found in all chordates has been replaced by a segmented series of mineralized irregular bones ...

  3. Vertebra - Wikipedia

    en.wikipedia.org/wiki/Vertebra

    A section of the human vertebral column, showing multiple vertebrae in a left posterolateral view. 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 ...

  4. Vertebrate - Wikipedia

    en.wikipedia.org/wiki/Vertebrate

    All vertebrates are built along the basic chordate body plan: a rigid axial endoskeleton (vertebral column and/or notochord) running along the length of the animal, [13] dorsal to the gut tube, with a hollow dorsal nerve cord (the neural tube, which develops into the brain and spinal cord) running more dorsal to it.

  5. Human skeleton - Wikipedia

    en.wikipedia.org/wiki/Human_skeleton

    The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together. [1] The bone mass in the skeleton makes up about 14% of the total body weight (ca. 10–11 kg for an average person) and reaches maximum mass ...

  6. Spinal canal - Wikipedia

    en.wikipedia.org/wiki/Spinal_canal

    FMA. 9680. Anatomical terminology. [edit on Wikidata] In human anatomy, the spinal canal, vertebral canal or spinal cavity is an elongated body cavity enclosed within the dorsal bony arches of the vertebral column, which contains the spinal cord, spinal roots and dorsal root ganglia. It is a process of the dorsal body cavity formed by alignment ...

  7. Thoracic vertebrae - Wikipedia

    en.wikipedia.org/wiki/Thoracic_vertebrae

    In vertebrates, thoracic vertebrae compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae. [1] In humans, there are twelve thoracic vertebrae and they are intermediate in size between the cervical and lumbar vertebrae; they increase in size going towards the lumbar vertebrae, with the lower ones being much larger than the upper.

  8. Axial skeleton - Wikipedia

    en.wikipedia.org/wiki/Axial_skeleton

    3D medical animation still shot of human skull. The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate.In the human skeleton, it consists of 80 bones and is composed of six parts; the skull (22 bones), also the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.

  9. Atlas (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Atlas_(anatomy)

    Atlas (anatomy) In anatomy, the atlas (C1) is the most superior (first) cervical vertebra of the spine and is located in the neck. The bone is named for Atlas of Greek mythology, just as Atlas bore the weight of the heavens, the first cervical vertebra supports the head. [ 1 ] However, the term atlas was first used by the ancient Romans for the ...

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