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Encyclopedia > Choroid plexus
Brain: Choroid plexus
Scheme of roof of fourth ventricle. The arrow is in the foramen of Majendie.
1: inferior medullary velum
2: Choroid plexus
3: Cerebellomedullary cistern of subarachnoid cavity
4: Central canal
5: Corpora quadrigemina
6: Cerebral peduncle
7: Superior medullary velum
8: Ependymal lining of ventricle
9: Pontine cistern of subarachnoid cavity
Coronal section of lateral and third ventricles.
Latin plexus chorioideus
Gray's subject #187 798
NeuroNames ancil-456
MeSH Choroid+Plexus

The choroid plexus is the area on the ventricles of the brain where cerebrospinal fluid (CSF) is produced by modified ependymal cells. Image File history File links This is a lossless scalable vector image. ... The fourth ventricle is one of the four connected fluid-filled cavities within the human brain. ... The median aperture of the brain (or foramen of Magendie) is an opening in the hollow nerve tube, connecting the fourth ventricle of the brain with the subarachnoid space. ... The inferior medullary velum (posterior medullary velum) is a thin layer of white substance, prolonged from the white center of the cerebellum, above and on either side of the nodule; it forms a part of the roof of the fourth ventricle. ... The cisterna magna (or cerebellomedullary cistern) is a large cistern between the cerebellum and medulla. ... For the psychedelic rock band, see SubArachnoid Space. ... Cross-section through cervical spinal cord. ... Corpora quadrigemina (Latin: four twins) is the collective name given to both pairs of the inferior and superior colliculi. ... The cerebral peduncle, by most classifications, is everything in the mesencephalon except the tectum. ... The superior medullary velum (anterior medullary velum, valve of Vieussens) is a thin, transparent lamina of white substance, which stretches between the superior peduncle; on the dorsal surface of its lower half the folia and lingula are prolonged. ... Ependyma is the thin epithelial membrane lining the ventricular system of the brain and the spinal cord canal. ... The Pontine cistern is a considerable space on the ventral aspect of the pons. ... For the psychedelic rock band, see SubArachnoid Space. ... Image File history File links Gray723. ... The ventricular system is a fluid conducting system within the brain. ... The third ventricle is one of the four connected fluid-filled cavities within the human brain. ... For other uses, see Latin (disambiguation). ... NeuroNames is a system of nomenclature for the brain and related structures. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... The ventricular system is a fluid conducting system within the brain. ... Cerebrospinal fluid (CSF), Liquor cerebrospinalis, 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). ... It has been suggested that this article or section be merged with Ependyma. ...


Choroid plexus is present in all components of the ventricular system except for the cerebral aqueduct and the occipital and frontal horns of the lateral ventricles. The ventricular system is a set of structures in the brain continuous with the central canal of the spinal cord. ... The mesencephalic duct, also known as the aqueduct of Sylvius or the cerebral aqueduct, contains cerebrospinal fluid (CSF), is within the mesencephalon (or midbrain) and connects the third ventricle in the diencephalon to the fourth ventricle, which is between the pons and cerebellum. ...


It is found in the superior part of the inferior horn of the lateral ventricles. It follows up along this boundary, continuous with the inferior of the body of the lateral ventricles. It passes into the interventricular foramen, and is present at the top of the third ventricle. The ventricular system is a fluid conducting system within the brain. ... In the brain, the interventricular foramina (or foramina of Monro) are channels that connect the paired lateral ventricles with the third ventricle at the midline of the brain. ... The third ventricle is one of the four connected fluid-filled cavities within the human brain. ...


There is also choroid plexus on the fourth ventricle, on the section closest to the bottom half of the cerebellum. The fourth ventricle is one of the four connected fluid-filled cavities within the human brain. ... The cerebellum (Latin: little brain) is a region of the brain that plays an important role in the integration of sensory perception and motor output. ...

Contents

Structure of the choroid plexus

The choroid plexus consists of many capillaries, separated from the subarachnoid space by pia mater and choroid ependymal cells. Liquid filters through these cells from blood to become cerebrospinal fluid. There is also much active transport of substances into, and out of, the CSF as it is made. [www. ... Neuroglia cells of the brain shown by Golgis method. ... Sodium-Potassium pump, an example of Primary active transport secondary active transport Active transport (sometimes called active uptake) is the mediated transport of biochemicals, and other atomic/molecular substances, across membranes. ...


Additional images

See also

The brain contains pockets or spaces called ventricles with a spongy layer of cells and blood vessels called the choroid plexus. ...

External links


  Results from FactBites:
 
Choroid Plexus Tumor - My Child Has - Children's Hospital Boston (1230 words)
Choroid plexus tumors are rare, representing only 3 percent of pediatric brain tumors, but account for 10-20 percent of pediatric brain tumors that occur within the first year of life.
Diagnostic procedures for a choroid plexus tumor, like other brain tumors, are necessary to determine the exact type of tumor and whether the tumor has spread.
Choroid plexus papillomas are usually cured by surgical removal of the tumor.
IX. Neurology. 4c. The Fore-brain or Prosencephalon. Gray, Henry. 1918. Anatomy of the Human Body. (13322 words)
When the choroid plexus is removed, a cleft-like opening is left along the medial wall of the inferior cornu; this cleft constitutes the lower part of the choroidal fissure.
The arteries of the plexus are: (a) the anterior choroidal, a branch of the internal carotid, which enters the plexus at the end of the inferior cornu; and (b) the posterior choroidal, one or two small branches of the posterior cerebral, which pass forward under the splenium.
When the choroid plexus is pulled away, the continuity between its epithelial covering and the epithelial lining of the ventricle is severed, and a cleft-like space is produced.
  More results at FactBites »


 

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