Nucleus pulposus

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Nucleus pulposus
Cervical vertebra with intervertebral disc. (Nucleus pulposus labeled at center right, and is visible at center in light blue.)
Stages of Spinal Disc Herniation
Gray's subject #17 82
Precursor notochord
Dorlands/Elsevier p_41/12679426

Nucleus pulposus is the jelly-like substance in the middle of the spinal disc. It is the remnant of the notochord. It functions to distribute hydraulic pressure in all directions within each disc under compressive loads. The nucleus pulposus consists of chondrocytes, collagen fibrils, and proteoglycan aggrecans that have hyaluronic long chains which attract water. Attached to each hyaluronic chain are side chains of chondroitin sulfate and keratan sulfate.[1]

Contents

Sagittal section through an intervertebral fibrocartilage and adjacent parts of two vertebræ of an advanced sheep’s embryo.

  1. ^ See Figure 1 in US patent application 2007/0003525.

 This neuroscience article is a stub. You can help Wikipedia by expanding it.
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Joints and ligaments of torso
Vertebral column articulations of vertebral bodies: anterior longitudinal ligament - posterior longitudinal ligament - intervertebral disc (annulus fibrosus, nucleus pulposus)

articulations of vertebral arches : ligamenta flava - supraspinous ligament (nuchal ligament) - interspinal ligament - intertransverse ligament

zygapophysial joint
Costovertebral articulation of head of rib: radiate ligament - interarticular ligament
costotransverse
Sternocostal interarticular sternocostal ligament - radiate sternocostal ligaments - costoxiphoid ligaments
interchondral, costochondral
Pelvis articulation of the vertebral column with the pelvis: iliolumbar ligament

sacroiliac: anterior sacroiliac ligament - posterior sacroiliac ligament - interosseous sacroiliac ligament

ligaments connecting the sacrum and ischium: sacrotuberous ligament - sacrospinous ligament

sacrococcygeal symphysis: anterior sacrococcygeal ligament - posterior sacrococcygeal ligament

pubic symphysis: superior pubic ligament - inferior pubic ligament
Retrieved from "http://en.wikipedia.org/wiki/Nucleus_pulposus"
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