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  2. Lumbar vertebrae - Wikipedia

    en.wikipedia.org/wiki/Lumbar_vertebrae

    The lumbar vertebrae are located between the thoracic vertebrae and pelvis. They form the lower part of the back in humans, and the tail end of the back in quadrupeds. In humans, there are five lumbar vertebrae. The term is used to describe the anatomy of humans and quadrupeds, such as horses, pigs, or cattle.

  3. Lumbar nerves - Wikipedia

    en.wikipedia.org/wiki/Lumbar_nerves

    The second lumbar spinal nerve (L2) [2] originates from the spinal column from below the lumbar vertebra 2 (L2). L2 supplies many muscles, either directly or through nerves originating from L2. They may be innervated with L2 as single origin, or be innervated partly by L2 and partly by other spinal nerves. The muscles are: quadratus lumborum ...

  4. Spinal column - Wikipedia

    en.wikipedia.org/wiki/Spinal_column

    Because the vertebral column will outgrow the spinal cord during child development, by adulthood the spinal cord often ends at the upper lumbar spine (at around L1/L2 level), the lower end of the spinal canal is occupied by a ponytail-like bundle of spinal nerves descriptively called cauda equina (from Latin "horse's tail"), and the sacrum and ...

  5. Spinal cord - Wikipedia

    en.wikipedia.org/wiki/Spinal_cord

    The spinal cord ends at the level of vertebrae L1–L2, while the subarachnoid space – the compartment that contains cerebrospinal fluid – extends down to the lower border of S2. [22] Lumbar punctures in adults are usually performed between L3–L5 (cauda equina level) in order to avoid damage to the spinal cord. [22]

  6. Conus medullaris - Wikipedia

    en.wikipedia.org/wiki/Conus_medullaris

    The conus medullaris (Latin for "medullary cone") or conus terminalis is the tapered, lower end of the spinal cord. It occurs near lumbar vertebral levels 1 (L1) and 2 (L2), occasionally lower. [1] [2] The upper end of the conus medullaris is usually not well defined, however, its corresponding spinal cord segments are usually S1–S5.

  7. Lateral grey column - Wikipedia

    en.wikipedia.org/wiki/Lateral_grey_column

    The four main divisions of the spinal column, from top to bottom: cervical, thoracic, lumbar, and sacral. The lateral grey column (lateral column, lateral cornu, lateral horn of spinal cord, intermediolateral column) is one of the three grey columns of the spinal cord (which give the shape of a butterfly); the others being the anterior and posterior grey columns.

  8. Congenital vertebral anomaly - Wikipedia

    en.wikipedia.org/wiki/Congenital_vertebral_anomaly

    Back pain associated with lumbosacral transitional vertebrae (LSTV) is known as Bertolotti's syndrome. One study found that male German Shepherd Dogs with a lumbosacral transitional vertebra are at greater risk for cauda equina syndrome , which can cause rear limb weakness and incontinence.

  9. Lumbar ganglia - Wikipedia

    en.wikipedia.org/wiki/Lumbar_ganglia

    The lumbar region L1 and L2 consist of neurons that innervate the adrenal gland, ureter, bladder, the lower extremities. The upper two lumbar ganglia (L1 and L2) of the sympathetic chain also give rise to the lumbar splanchnic nerves. Splanchnic nerves are paired visceral nerves carrying preganglionic sympathetic and general visceral afferent ...