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7647. Anatomical terminology. [ edit on Wikidata] The spinal cord is a long, thin, tubular structure made up of nervous tissue that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column (backbone) of vertebrate animals. The center of the spinal cord is hollow and contains a structure called the central ...
78497. Anatomical terminology. [ edit on Wikidata] The central canal (also known as spinal foramen or ependymal canal[ 1]) is the cerebrospinal fluid -filled space that runs through the spinal cord. [ 1] The central canal lies below and is connected to the ventricular system of the brain, from which it receives cerebrospinal fluid, and shares ...
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 of ...
A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column. [ 1][ 2] These are grouped into the corresponding cervical, thoracic, lumbar, sacral and coccygeal regions of the spine. [ 1]
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.
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vertebrate endoskeleton, where the notochord (an elastic collagen-wrapped glycoprotein rod) found in all chordates has been replaced by a segmented series of mineralized irregular bones ...
Cauda equina syndrome, a rare disorder affecting the bundle of nerve roots (cauda equina) at the lower (lumbar) end of the spinal cord, is a surgical emergency. [ 3] Cauda equina syndrome occurs when the nerve roots in the lumbar spine are compressed, disrupting sensation and movement. [ 4] Nerve roots that control the function of the bladder ...
The anterior grey column (also called the anterior cornu, anterior horn of spinal cord, motor horn or ventral horn [1] [2]) is the front column of grey matter in the spinal cord. It is one of the three grey columns. The anterior grey column contains alpha motor neurons that affect the skeletal muscles while the posterior grey column receives ...
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