spinal column


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spinal column,

bony column forming the main structural support of the skeletonskeleton,
in anatomy, the stiff supportive framework of the body. The two basic types of skeleton found among animals are the exoskeleton and the endoskeleton. The shell of the clam is an exoskeleton composed primarily of calcium carbonate.
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 of humans and other vertebrates, also known as the vertebral column or backbone. It consists of segments known as vertebrae linked by intervertebral disks and held together by ligaments. In human beings, the spinal column of the child contains more vertebrae than the adult, in whom a number become fused into two immovable bones, the sacrum and the coccyx, forming the back of the pelvispelvis,
bony, basin-shaped structure that supports the organs of the lower abdomen. It receives the weight of the upper body and distributes it to the legs; it also forms the base for numerous muscle attachments.
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. The 24 movable vertebrae are the 7 cervical (neck), 12 thoracic (back of chest), and 5 lumbar (loin). The remaining vertebrae include 5 fused sacral, and between 3 and 5 fused caudal. Each vertebra has a somewhat cylindrical bony body (centrum), a number of winglike projections, and a bony arch. The bodies of the vertebrae form the strong but pliable supporting column of the skeleton. The arches are positioned so that the space they enclose is in effect a tube, the vertebral canal. It houses and protects the spinal cordspinal cord,
the part of the nervous system occupying the hollow interior (vertebral canal) of the series of vertebrae that form the spinal column, technically known as the vertebral column.
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, and within it the spinal fluid circulates. Ligaments and muscles are attached to various projections of the vertebrae. The 12 pairs of ribs that make up the front of the chest are linked to the thoracic vertebrae. The spine is subject to abnormal curvature, injury, infections, tumor formation, arthritic disorders, and puncture or slippage of the cartilage disks. Scoliosis is one relatively common disease which affects the spinal column. It involves moderate to severe lateral curvature of the spine, and, if not treated, may lead to serious deformities later in life.

spinal column

[′spīn·əl ‚käl·əm]
(anatomy)

spinal column

a series of contiguous or interconnecting bony or cartilaginous segments that surround and protect the spinal cord
References in periodicals archive ?
The equipment InSpeck is an all-purpose imaging system, so that a special software, specific for the spinal column, was required in order to acquire data.
Authors such as Andujar, and Santoja, (1996) make reference to some concepts that are defined as follows: correct posture: "posture that doesn't load either the spinal column or other element of the locomotor apparatus "; vicious posture: "posture that loads the bone, the tendon, the muscle, the vascular structures etc.
Linear regression analysis was used to analyze whether any correlation exists between the highest level of sensory blockade achieved and the parturient spinal column length.
While riding bikes she has broken an ankle and shoulder blade, and she is now awaiting an MRI scan to investigate a severe narrowing of the spinal column.
After a wild ride in an ambulance, multiple X-rays, and some MRIs, I learned that I had broken and dislocated two vertebrae (C4 and C5) in my neck, and they were pushing into my spinal column.
As set out in the road map of July 2005 on the measures to combat transmissible spongiform encephalopathies (TSEs), the Commission decided to increase the age limit for the removal of the spinal column from bovines when they are slaughtered.
When you're asleep, the discs that separate the vertebrae in your spinal column expand a little bit.
As if that wasn't bad enough, when she was checked again it was discovered the painful neck was no muscle injury - it was caused by three broken bones, one very near her spinal column.
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Marjorie Emmerson, 84, of Hudswell Grove, Hartburn, fell in her kitchen and fractured her spinal column and canal on March 4.
The lack of that bony structure freed the animal's skull from its shoulder girdle, giving the creature's spinal column extra flexibility and, in essence, a neck.