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Encyclopedia > Meninges

The meninges (singular meninx) are the system of membranes that envelop the central nervous system. The meninges consist of three layers, the dura mater, the arachnoid mater, and the pia mater. It has been suggested that Net flux be merged into this article or section. ... A diagram showing the CNS: 1. ... 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 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 pia mater (Latin: tender mother, itself a translation from Arabic) is the delicate innermost layer of the meninges - the membranes surrounding the brain and spinal cord. ...


Anatomy

The arachnoid and pia mater are sometimes together called the leptomeninges. The pia mater (Latin: tender mother, itself a translation from Arabic) is the delicate innermost layer of the meninges - the membranes surrounding the brain and spinal cord. ... It has been suggested that Net flux be merged into this article or section. ... Comparative brain sizes In animals, the brain, or encephalon (Greek for in the head), is the control center of the central nervous system. ... Cross-section through cervical spinal cord. ... Comparative brain sizes In animals, the brain, or encephalon (Greek for in the head), is the control center of the central nervous system. ... Grays FIG. 726– Lateral surface of left cerebral hemisphere, viewed from the side. ... A sulcus (pl. ... The word capillary is used to describe any very narrow tube or channel through which a fluid can pass. ... 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. ... Spider web with morning dew enhancing its visibility. ... Cerebrospinal fluid (CSF) is a clear bodily fluid that occupies the subarachnoid space in the brain (the space between the skull and the cerebral cortex—more specifically, between the arachnoid and pia layers of the meninges). ... 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. ... It has been suggested that Net flux be merged into this article or section. ... A hippopotamus skull A skull, or cranium, is a bony structure of Craniates which serves as the general framework for a head. ... The arachnoid layer is the second or middle layer of the meninges, the membranes surrounding the brain. ... The pia mater (Latin: tender mother, itself a translation from Arabic) is the delicate innermost layer of the meninges - the membranes surrounding the brain and spinal cord. ...


The subarachnoid space is the space that normally exists between the arachnoid and the pia. The meninges (singular meninx) are the system of membranes that contain the brain. ... The arachnoid layer is the second or middle layer of the meninges, the membranes surrounding the brain. ... The name Pia is the feminine version of Pius, meaning pious, dutifull. ...


Normally, the dura mater is attached to the skull in the head, or to the bones of the vertebral canal in the spinal cord. The arachnoid is attached to the dura mater, and the pia mater is attached to the central nervous system tissue. When the dura mater and the arachnoid separate through injury or illness, the space between them is the subdural space. 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. ... A hippopotamus skull A skull, or cranium, is a bony structure of Craniates which serves as the general framework for a head. ... Cross-section through cervical spinal cord. ... The arachnoid layer is the second or middle layer of the meninges, the membranes surrounding the brain. ... 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 pia mater (Latin: tender mother, itself a translation from Arabic) is the delicate innermost layer of the meninges - the membranes surrounding the brain and spinal cord. ... 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 arachnoid layer is the second or middle layer of the meninges, the membranes surrounding the brain. ...


Pathology

There are three types of hemorrhage involving the meninges: To meet Wikipedias quality standards, this article or section may require cleanup. ...

Other medical conditions that affect the meninges include meningitis (a viral or bacterial infection). Meningiomas are tumors (generally benign) arising from the meninges. Malignant tumors formed elsewhere may also metastasize to the meninges. A subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space surrounding the brain, i. ... A subdural hematoma, also called a subdural hemorrhage, is a collection of blood between the dura (the outer protective covering of the brain) and the arachnoid (the middle layer of the meninges). ... Hematoma on an elbow, nine days after a blood sample was taken Hematoma on a forearm, one day after repeated shocks A hematoma, or haematoma, is a collection of blood, generally the result of hemorrhage. ... The arachnoid layer is the second or middle layer of the meninges, the membranes surrounding the brain. ... 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 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 arachnoid layer is the second or middle layer of the meninges, the membranes surrounding the brain. ... Nontraumatic epidural hematoma in a young woman. ... Meningitis is inflammation of the membranes (meninges) covering the brain and the spinal cord. ... The human immunodeficiency virus (HIV) A bacteriophage virus A virus is a submicroscopic parasitic particle that infects cells in biological organisms. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... Meningiomas are tumors arising from the outer part of the arachnoid mater in the meninges of the brain or the spinal cord. ... Tumor (American English) or tumour (British English) originally means swelling, and is sometimes still used with that meaning. ... Metastasis (Greek: change of the state) is the spread of cancer from its primary site to other places in the body. ...


References

  1. Orlando Regional Healthcare, Education and Development. 2004. "Overview of Adult Traumatic Brain Injuries."


Meninges of the brain and medulla spinalis

Dura mater - Falx cerebri - Tentorium cerebelli - Falx cerebelli - Arachnoid mater - Subarachnoid space - Cistern - Cisterna magna - Median aperture - Cerebrospinal fluid - Arachnoid granulation - Pia mater Comparative brain sizes In animals, the brain, or encephalon (Greek for in the head), is the control center of the central nervous system. ... 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 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 falx cerebri (Latin: scythe of the brain) is an extension of the protective dura mater that projects into the longitudinal fissure that seperates the two cerebral hemispheres. ... The tentorium cerebelli (Latin: tent of the cerebellum) is an extension of the dura mater that seperates the cerebellum from the inferior portion of the occipital lobes. ... The falx cerebelli is a small triangular process of dura mater, received into the posterior cerebellar notch. ... 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. ... In neuroanatomy, a cistern (Latin: box) is any opening in the subarachnoid space of the brain created by a separation of the arachnoid and dura mater. ... The cisterna magna is a large cistern between the cerebellum and medulla. ... The Median Aperture of the brain (apertura medialis ventriculi quarte) or Foramen of Magendie is an opening in the hollow nerve tube, connecting the 4th ventricle of the brain with the subarachnoid space The median aperture along with the paired lateral apertures (foramina of Luschka) are the primary routes for... Cerebrospinal fluid (CSF) is a clear bodily fluid that occupies the subarachnoid space in the brain (the space between the skull and the cerebral cortex—more specifically, between the arachnoid and pia layers of the meninges). ... Arachnoid granulations (and arachnoid villi) are small protrusions of the arachnoid (the thin second layer covering the brain) through the dura (the thick outer layer). ... The pia mater (Latin: tender mother, itself a translation from Arabic) is the delicate innermost layer of the meninges - the membranes surrounding the brain and spinal cord. ...


  Results from FactBites:
 
MedlinePlus Medical Encyclopedia: Meningitis (715 words)
Meningitis is an infection that causes inflammation of the membranes covering the brain and spinal cord.
Meningitis is also caused by fungi, chemical irritation, drug allergies, and tumors.
Meningitis is an important cause of fever in newborn children.
Meningitis (2131 words)
Meningitis is an inflammation of the meninges, the membranes that cover the brain and spinal cord.
In some cases of bacterial meningitis, the bacteria spread directly to the meninges from a severe nearby infection, such as a serious ear infection (otitis media) or nasal sinus infection (sinusitis).
The symptoms of meningitis vary and depend both on the age of the child and on which bacterium or virus is causing the infection.
  More results at FactBites »

 
 

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