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Fourth ventricle location shown in red (E), pons (B); the floor of the ventricle is to the right, the roof to the left. The fourth ventricle has a roof at its upper (posterior) surface and a floor at its lower (anterior) surface, and side walls formed by the cerebellar peduncles (nerve bundles joining the structure on the posterior side of the ventricle to the structures on the anterior side).
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SVG illustration of the human heart, created by Wapcaplet in Sodipodi. Slightly modified for correct rendering by Yaddah (no changes to content). Cropped version withour white space available at File:Diagram of the human heart (cropped).svg Uploaded on 24 Dec 2003. Diagram of the human heart: Source: Own work: Author: Wapcaplet, Yaddah: Other ...
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: Prepontine cistern of subarachnoid cavity
The ventricles contained within the rhombencephalon become the fourth ventricle, and the ventricles contained within the mesencephalon become the aqueduct of Sylvius. Separating the anterior horns of the lateral ventricles is the septum pellucidum : a thin, triangular, vertical membrane which runs as a sheet from the corpus callosum down to the ...
The median aperture (median aperture of fourth ventricle or foramen of Magendie) is an opening at the caudal portion of the roof of the fourth ventricle. [1] It allows the flow of cerebrospinal fluid (CSF) from the fourth ventricle into the cisterna magna. [2] [3] The other openings of the fourth ventricle are the lateral apertures - one on ...
The facial colliculus is an elevated area located in the pontine tegmentum (dorsal pons), [citation needed] within the floor of the fourth ventricle (i.e. the rhomboid fossa). It is formed by fibres from the facial motor nucleus looping over the abducens nucleus. The facial colliculus is an essential landmark of the rhomboid fossa. [1]
The lateral aperture, lateral aperture of fourth ventricle or foramen of Luschka (after anatomist Hubert von Luschka) [1] is an opening at the lateral extremity of either lateral recess of the fourth ventricle opening anteriorly [2] into (sources differ) the pontine cistern [2] /lateral cerebellomedullary cistern at cerebellopontine angle. [3]