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The fifth lumbar vertebra is characterized by its body being much deeper in front than behind, which accords with the prominence of the sacrovertebral articulation; by the smaller size of its spinous process; by the wide interval between the inferior articular processes, and by the thickness of its transverse processes, which spring from the ...
Inferior to L4, the supraspinous ligament becomes indistinct, lost amid the prominent lumbar fascia. [4] J: Supraspinous ligament. Between the spinous processes, the supraspinous ligament is continuous with the interspinous ligaments. [3]
Its most prominent point behind corresponds to the spinous process of the seventh thoracic vertebra. This curve is known as a kyphotic curve. Lateral lumbar X-ray of a 34-year-old male. The lumbar curve is more marked in the female than in the male; it begins at the middle of the last thoracic vertebra, and ends at the sacrovertebral angle.
one spinous process; two transverse processes; four articular processes; A major part of a vertebra is a backward extending spinous process (sometimes called the neural spine) which projects centrally. [7] This process points dorsally and caudally from the junction of the laminae. [7] The spinous process serves to attach muscles and ligaments.
In anatomy, a process (Latin: processus) is a projection or outgrowth of tissue from a larger body. [1] For instance, in a vertebra, a process may serve for muscle attachment and leverage (as in the case of the transverse and spinous processes), or to fit (forming a synovial joint), with another vertebra (as in the case of the articular processes). [2]
Bertolotti's syndrome is characterized by sacralization of the lowest lumbar vertebral body and lumbarization of the uppermost sacral segment. It involves a total or partial unilateral or bilateral fusion of the transverse process of the lowest lumbar vertebra to the sacrum, leading to the formation of a transitional 5th lumbar vertebra.
The articular process or zygapophysis (Greek: ζυγόν, romanized: zugón, lit. 'yoke' + apophysis) of a vertebra is a projection of the vertebra that serves the purpose of fitting with an adjacent vertebra. The actual region of contact is called the articular facet. [1]
The interspinous ligaments (interspinal ligaments) are thin, membranous ligaments that connect adjoining spinous processes of the vertebra in the spine. [1] [2] They take the form of relatively weak sheets of fibrous tissue and are well developed only in the lumbar region. [3] They extend from the root to the apex of each spinous process.