Rexed laminae
Information about Rexed laminae
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Medulla spinalis - Substantia grisea
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Rexed lamina
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Rexed lamina
Similar to Brodmann areas, they are defined by their cellular structure rather than by their location, but the location still remains reasonably consistent.
Laminae
- I-VI: Posterior/dorsal horn
- Lamina I: posteromarginal nucleus
- Laminae II/III: substantia gelatinosa
- Laminae III/IV/V: nucleus proprius
- Lamina VI: nucleus dorsalis
- VII-IX: Anterior/ventral horn
- Lamina VII: intermediolateral nucleus
- Lamina VIII: motor interneurons
- Lamina IX: motor neurons which also contain the nucleus of onuf in the sacral region
- Lamina X: neurons bordering Central canal
References
1. ^ Rexed B (1952). "The cytoarchitectonic organization of the spinal cord in the cat.". J Comp Neurol 96 (3): 414-95. PMID 14946260.
2. ^ Rexed B (1954). "A cytoarchitectonic atlas of the spinal cord in the cat.". J Comp Neurol 100 (2): 297-379. PMID 13163236.
2. ^ Rexed B (1954). "A cytoarchitectonic atlas of the spinal cord in the cat.". J Comp Neurol 100 (2): 297-379. PMID 13163236.
External links
- Overview at University of the West Indies
- Overview at University of Medicine and Dentistry of New Jersey
Anatomy of torso (primarily): the spinal cord | |
|---|---|
| Spinal nerve | Dorsal (Root, Ganglion, Ramus) • Ventral (Root, Ramus) • Sympathetic trunk • rami communicantes (Gray, White) |
| Gray matter/Rexed laminae | Posterior horn (Column of Clarke, Substantia gelatinosa of Rolando, Nucleus proprius) • Lateral horn • Anterior horn • Central canal/Substantia gelatinosa centralis |
| White matter: somatic/ascending (blue) | |
| White matter: motor/descending (red) |
Lateral: Corticospinal (Lateral) • Ep (Rubrospinal, Olivospinal)
Anterior: Corticospinal (Anterior) • Ep (Vestibulospinal, Tectospinal, Reticulospinal)
|
| Layers | Epidural space • Dura mater • Subdural space • Arachnoid mater • Subarachnoid space • Pia mater |
| Other structures | Denticulate ligaments • Conus medullaris • Cauda equina • Filum terminale • Cervical enlargement • Lumbar enlargement • Anterior median fissure |
Bror Rexed (June 19, 1914 - August 21, 2002) was a Swedish neuroscientist and professor at Uppsala University. Internationally, he is best known today for his development of the system now known as Rexed laminae, but in Sweden, he is also known for his involvement in the
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spinal chord is a thin, tubular bundle of nerves that is an extension of the central nervous system from the brain and is enclosed in and protected by the bony vertebral column.
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Brodmann area is a region in the brain cortex defined in many different species based on its cytoarchitecture. Cytoarchitecture is the organization of the cortex as observed when a tissue is stained for nerve cells.
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The posterior horn (posterior column, posterior cornu, dorsal horn, spinal dorsal horn) of the spinal cord is the dorsal (more towards the back) grey matter of the spinal cord.
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The posteromarginal nucleus, Rexed lamina I, is located at the most dorsal aspect of the dorsal horn of the spinal cord. The neurons located here receive input primarily from Lissauer's tract and relay information related to pain and temperature sensation.
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Substantia gelatinosa can refer to:
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- Substantia gelatinosa of Rolando (usually what is meant when "Substantia gelatinosa" is used by itself)
- Substantia gelatinosa centralis
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The Nucleus proprius is a layer of the spinal cord adjacent to the substantia gelatinosa. It receives non-noxious inputs from the periphery. Cells in this nucleus project to deeper laminae of the spinal cord, to the posterior column nuclei, and to other supraspinal relay centers
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The dorsal nucleus (column of Clarke, Clarke's columns, posterior thoracic nucleus) occupies the medial part of the base of the posterior column, and appears on the transverse section as a well-defined oval area.
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The intermediolateral nucleus is a region of gray matter found in Rexed lamina VII. It contains several well defined nuclei including the nucleus dorsalis (Clark's column), the intermediolateral cell column (lateral gray horn), and the sacral autonomic nucleus.
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An interneuron (also called relay neuron, association neuron or bipolar neuron) is a term used to describe a neuron which has two different common meanings.
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Location Ventral horn of the spinal cord
Function Excitatory projection (to NMJ)
Neurotransmitter ACh
Morphology Projection neuron
Presynaptic connections M1 via the Corticospinal tract
Postsynaptic connections
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Function Excitatory projection (to NMJ)
Neurotransmitter ACh
Morphology Projection neuron
Presynaptic connections M1 via the Corticospinal tract
Postsynaptic connections
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The central canal is the cerebrospinal fluid-filled space that runs longitudinally through the length of the entire spinal cord. The central canal is contiguous with the ventricular system of the brain. The central canal represents the adult remainder of the neural tube.
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University of the West Indies, also known as UWI, is an autonomous regional institution supported by and serving 16 English speaking countries and territories in the Caribbean : Anguilla, Antigua and Barbuda, The Bahamas, Barbados, Belize, the British Virgin Islands, the
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The University of Medicine and Dentistry of New Jersey is the state-run health sciences institution of New Jersey and comprises eight distinct academic units: the New Jersey Medical School, the New Jersey Dental School, the Graduate School of Biomedical Sciences, the School of
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Torso is an anatomical term for the central part of the many animal bodies (including that of the human) from which extend the neck and limbs. It is sometimes referred to as the trunk. The torso includes the thorax and abdomen.
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spinal chord is a thin, tubular bundle of nerves that is an extension of the central nervous system from the brain and is enclosed in and protected by the bony vertebral column.
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The term spinal nerve generally refers to the mixed spinal nerve, which is formed from the dorsal and ventral roots that come out of the spinal cord. The spinal nerve is the bit that passes out of the vertebrae through the intervertebral foramen.
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In anatomy and neurology, the dorsal root (or posterior root) is the afferent sensory root of a spinal nerve.
At the distal end of the dorsal root is the dorsal root ganglion, which contains the neuron cell bodies of the nerve fibres conveyed by the root.
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At the distal end of the dorsal root is the dorsal root ganglion, which contains the neuron cell bodies of the nerve fibres conveyed by the root.
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In anatomy and neurology, the dorsal root ganglion (or spinal ganglion) is a nodule on a dorsal root that contains cell bodies of neurons in afferent spinal nerves.
The axons of dorsal root ganglion neurons are known as afferents.
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The axons of dorsal root ganglion neurons are known as afferents.
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The posterior (or dorsal) branches (or divisions) of the spinal nerves are as a rule smaller than the anterior divisions.
They are directed backward, and, with the exceptions of those of the first cervical, the fourth and fifth sacral, and the coccygeal, divide into medial
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They are directed backward, and, with the exceptions of those of the first cervical, the fourth and fifth sacral, and the coccygeal, divide into medial
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In anatomy and neurology, the ventral root (or anterior root) is the efferent motor root of a spinal nerve.
At its distal end, the ventral root joins with the dorsal root to form a mixed spinal nerve.
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At its distal end, the ventral root joins with the dorsal root to form a mixed spinal nerve.
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The ventral ramus (anterior ramus, anterior branch, anterior divisions of the spinal nerves) supply the antero-lateral parts of the trunk, and the limbs; they are for the most part larger than the posterior divisions.
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The sympathetic trunk (sympathetic chain, gangliated cord) is a bundle of nerve fibers that runs from the base of the skull to the coccyx. There are two sympathetic trunks in the body, a right one and a left one.
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Rami communicans (plural rami communicantes) is the term used for a nerve which connects two other nervers.
When used without further definition, it almost always refers to a communicating branch between a spinal nerve and the sympathetic trunk.
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When used without further definition, it almost always refers to a communicating branch between a spinal nerve and the sympathetic trunk.
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Each spinal nerve receives a branch, gray ramus communicans, from the adjacent ganglion of the sympathetic trunk.
They contain unmyelinated postganglionic sympathetic fibers.
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They contain unmyelinated postganglionic sympathetic fibers.
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The thoracic, and the first and second lumbar nerves each contribute a branch, white ramus communicans to the adjoining sympathetic ganglion.
They contain myelinated preganglionic sympathetic fibers (GVE and GVA).
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They contain myelinated preganglionic sympathetic fibers (GVE and GVA).
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"Gray Matter"
Author Stephen King
Language English
Genre(s) Horror, science fiction
Published in Cavalier (1st release) ,
Night Shift,
Arbour House Necropolis
Publication type Magazine
Media type Print
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Author Stephen King
Language English
Genre(s) Horror, science fiction
Published in Cavalier (1st release) ,
Night Shift,
Arbour House Necropolis
Publication type Magazine
Media type Print
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The posterior horn (posterior column, posterior cornu, dorsal horn, spinal dorsal horn) of the spinal cord is the dorsal (more towards the back) grey matter of the spinal cord.
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The dorsal nucleus (column of Clarke, Clarke's columns, posterior thoracic nucleus) occupies the medial part of the base of the posterior column, and appears on the transverse section as a well-defined oval area.
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substantia gelatinosa of Rolando (or gelatinous substance of posterior horn of spinal cord), which contains both neuroglia cells, and small nerve cells. The gelatinous appearance is due to a very low concentration of myelinated fibers.
It is named for Luigi Rolando.
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It is named for Luigi Rolando.
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