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Encyclopedia > Posterior horn
Posterior horn
Section of medulla spinalis. The posterior horn is the upper protrusion of grey matter, labeled with "2"
Latin cornu posterius medullae spinalis
Gray's subject #185 753
Dorlands/Elsevier c_55/12259855

The posterior horn (posterior cornu, dorsal horn, spinal dorsal horn) of the spinal cord is the dorsal (more towards the back) grey matter of the spinal cord. It receives several types of sensory information from the body, including light touch, proprioception, and vibration. This information is sent from receptors of the skin, bones, and joints through sensory neurons whose cell bodies lie in the dorsal root ganglion. Image File history File links Medulla_spinalis_-_Section_-_English. ... For other uses, see Latins and Latin (disambiguation). ... Elseviers logo. ... The Spinal cord nested in the vertebral column. ... // Proprioception (PRO-pree-o-SEP-shun (IPA pronunciation: ); from Latin proprius, meaning ones own and perception) is the sense of the relative position of neighbouring parts of the body. ... Oscillation is the variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. ... The cell body or soma is a structure in a neuron consisting of the main part of the cell and containing the nucleus. ... This is a dorsal root ganglion (DRG) from a chicken embryo (around stage of day 7) after incubation overnight in NGF growth medium stained with anti-neurofilament antibody. ...


Anatomy

The posterior grey horn is subdivided into these laminae. Below are several named examples of each lamina. This article is about the leaf, a plant organ. ...

The other laminae are located in other regions of grey matter in the spinal cord. Substantia gelatinosa can refer to: Substantia gelatinosa of Rolando Substantia gelatinosa centralis This is a disambiguation page: a list of articles associated with the same title. ... The Nucleus proprius is a layer of the spinal cord adjacent to the substantia gelatinosa. ... The dorsal nucleus (column of Clarke, Clarkes 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. ...


Additional images

See also

  • Posterior column-medial lemniscus pathway
  • Posterior horn of lateral ventricles
  • Anterior horn
The posterior column-medial lemniscus pathway is the sensory pathway responsible for transmitting fine touch and conscious proprioceptive information from the body to the cerebral cortex. ... The anterior horn of the spinal cord (or anterior cornu, or anterior column) is the ventral (front) grey matter section of the spinal cord. ... The human torso Torso is an anatomical term for the greater part of the human body without the head and limbs. ... The Spinal cord nested in the vertebral column. ... 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. ... penis ... This is a dorsal root ganglion (DRG) from a chicken embryo (around stage of day 7) after incubation overnight in NGF growth medium stained with anti-neurofilament antibody. ... The posterior (or dorsal) branches (or divisions) of the spinal nerves are as a rule smaller than the anterior divisions. ... In anatomy and neurology, the ventral root is the efferent motor root of a spinal nerve. ... 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. ... The sympathetic trunk (sympathetic chain, gangliated cord) is a bundle of nerve fibers that runs from the base of the skull to the coccyx. ... Rami communicans (plural rami communicantes) is the term used for a nerve which connects two other nervers. ... Each spinal nerve receives a branch, gray ramus communicans, from the adjacent ganglion of the sympathetic trunk. ... The thoracic, and the first and second lumbar nerves each contribute a branch, white ramus communicans to the adjoining sympathetic ganglion. ... Grey matter (or gray matter) is a major component of the central nervous system, consisting of nerve cell bodies, glial cells (astroglia and oligodendrocytes), capillaries, and short nerve cell extensions/processes (axons and dendrites). ... Medulla spinalis - Substantia grisea The Rexed laminae comprise a system of ten layers of grey matter (I-X), identified in the early 1950s by Bror Rexed to label portions of the spinal cord. ... The dorsal nucleus (column of Clarke, Clarkes 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. ... The apex of the posterior column is capped by a V-shaped or crescentic mass of translucent, gelatinous neuroglia, termed the substantia gelatinosa of Rolando (or gelatinous substance of posterior horn of spinal cord), which contains both neuroglia cells, and small nerve cells. ... The Nucleus proprius is a layer of the spinal cord adjacent to the substantia gelatinosa. ... In the thoracic region, the postero-lateral part of the anterior column projects lateralward as a triangular field, which is named the lateral column (lateral cornu, lateral horn). ... The anterior horn of the spinal cord (or anterior cornu, or anterior column) is the ventral (front) grey matter section of the spinal cord. ... Cross-section through cervical spinal cord. ... Throughout the cervical and thoracic regions the central canal is situated in the anterior third of the medulla spinalis; in the lumbar enlargement it is near the middle, and in the conus medullaris it approaches the posterior surface. ... White matter is one of the two main solid components of the central nervous system. ... The portion of the medulla spinalis which lies between the posterolateral sulcus and the posterior median sulcus is named the posterior funiculus. ... The posterior column-medial lemniscus pathway is the sensory pathway responsible for transmitting fine touch and conscious proprioceptive information from the body to the cerebral cortex. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... The fasciculus cuneatus (tract of Burdach) is triangular on transverse section, and lies between the fasciculus gracilis and the posterior column, its base corresponding with the surface of the medulla spinalis. ... The most lateral of the bundles of the anteior nerve roots is generally taken as a dividing line which separates the antero-lateral region into two parts, viz. ... The spinocerebellar tract is a set of axonal fibers originating in the spinal cord and terminating in the cerebellum. ... The dorsal spinocerebellar tract (posterior spinocerebellar tract, Flechsigs fasciculus, Flechsigs tract) conveys proprioceptive information from the body to the cerebellum. ... The ventral spinocerebellar tract conveys proprioceptive information from the body to the cerebellum. ... The spinothalamic tract is a sensory pathway originating in the spinal cord that transmits information about pain, temperature, itch and crude touch to the thalamus. ... The spinothalamic tract is the sensory pathway in the body that transmits pain, temperature, itch and crude touch. ... The spinothalamic tract is the sensory pathway in the body that transmits pain, temperature, itch and crude touch. ... The posterolateral tract (fasciculus of Lissauer, tract of Lissauer, dorsolateral fasciculus) is a small strand situated in relation to the tip of the posterior column close to the entrance of the posterior nerve roots. ... The spinotectal tract (spinotectal fasciculus) is supposed to arise in the dorsal column and terminate in the inferior and superior colliculi. ... The corticospinal or pyramidal tract is a massive collection of axons that travel between the cerebral cortex of the brain and the spinal cord. ... The corticospinal or pyramidal tract is a massive collection of axons that travel between the cerebral cortex of the brain and the spinal cord. ... In human anatomy, the extrapyramidal system is a neural network located in the brain that is part of the motor system involved in the coordination of movement. ... The rubrospinal tract is part of the indirect extra-pyramidal tract and is responsible for large muscle movement such as the arms and the legs. ... The olivospinal fasciculus (Helweg) arises in the vicinity of the inferior olivary nucleus in the medulla oblongata, and is seen only in the cervical region of the medulla spinalis, where it forms a small triangular area at the periphery, close to the most lateral of the anterior nerve roots. ... The most lateral of the bundles of the anterior nerve roots is generally taken as a dividing line which separates the antero-lateral region into two parts, viz. ... The anterior corticospinal tract (also called the direct pyramidal tract or anterior cerebrospinal fasciculus) is a small bundle of descending fibers that connect the cerebral cortex to the spinal cord. ... The vestibulospinal tract is one of the descending spinal tracts of the ventromedial pathway. ... The reticulospinal tract (or anterior reticulospinal tract) is an extrapyramidal motor tract which travels from the reticular formation. ... The tectospinal tract is part of the indirect extrapyramidal tract and is responsible for coordinating head and eye movements, It is responsible for impulses that are motor. ... The epidural space is a part of the human spine which is very close to the spinal cord, lying just outside the dura mater. ... The dura mater (from the Latin hard mother), or pachymeninx, is the tough and inflexible outermost of the three layers of the meninges surrounding the brain. ... The subdural space (or subdural cavity) is an artificial space created by the separation of the arachnoid mater from the dura mater as the result of trauma or pathologic process. ... The Arachnoid mater is one of the three layers of the meninges, interposed between the dura mater and the pia mater and separated from the pia mater by the subarachnoid space. ... The meninges (singular meninx) are the system of membranes that contain the brain. ... [www. ... The pia mater has 21 pairs of denticulate ligaments which attach it to the arachnoid and dura maters. ... The conus medullaris is the terminal end of the spinal cord. ... The cauda equina is a structure within the lower end of the spinal column, that consists of nerve roots and rootlets from above. ... The spinal cord is a part of the vertebrate nervous system that is enclosed in and protected by the vertebral column (it passes through the spinal canal). ... The cervical enlargement corresponds with the attachments of the large nerves which supply the upper limbs. ... The lumbar enlargement (or lumbosacral enlargement) gives attachment to the nerves which supply the lower limbs. ... The anterior median fissure of the spinal cord has an average depth of about 3 mm, but this is increased in the lower part of the medulla spinalis. ...

  Results from FactBites:
 
Anterior horn - Wikipedia, the free encyclopedia (131 words)
The anterior horn contains motoneurons that effect the axial muscles while the posterior horn receives information regarding touch and sensation.
The anterior horn is where the cell bodies of alpha motorneurons are located.
It is these cells that are affected in the so-called "Anterior Horn Diseases", namely Amyotrophic Lateral Sclerosis, Spinal muscular atrophy, Charcot-Marie-Tooth disease and Progressive muscular atrophy.
  More results at FactBites »

 
 

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