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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 ...
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 ...
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 ...
Dura mater. In neuroanatomy, dura mater is a thick membrane made of dense irregular connective tissue that surrounds the brain and spinal cord. It is the outermost of the three layers of membrane called the meninges that protect the central nervous system. The other two meningeal layers are the arachnoid mater and the pia mater.
Tubular sheath of dura mater that surrounds the spinal cord and cauda equina. Thecal sac, dural sac. A section of the spinal cord with the dura opened to show the interior of the thecal sac. The spinal canal in cross-section; the outer layer of the thecal sac, the dura, is colored green and the subarachnoid space is blue. Anatomical terminology.
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.
Anatomical terms of neuroanatomy. [ edit on Wikidata] The arachnoid mater (or simply arachnoid) is one of the three meninges, the protective membranes that cover the brain and spinal cord. It is so named because of its resemblance to a spider web. The arachnoid mater is a derivative of the neural crest mesoectoderm in the embryo.