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[No title] The cerebral aqueduct connects the third and fourth ventricles, which are fluid reservoirs within the brain. Cerebral palsy: A developmental disorder characterized by motor control difficulties; cerebral palsy results from perinatal damage to brain tissue. Hypertrophy: Overgrowth of the branches of a neuron. www.brainconnection.com /gen/gloss.html   (12864 words)

IX. Neurology. 4b. The Mid-brain or Mesencephalon. Gray, Henry. 1918. Anatomy of the Human Body. Bechterew is of the opinion that the fibers from the motor area of the cerebral cortex form synapses with cells whose axons pass to the motor nucleus of the trigeminal nerve and serve for the coördination of the muscles of mastication. In the cerebral peduncle, a few of its fibers pass upward in the lateral part of the base of the peduncle, on the dorsal aspect of the temporopontine fibers, and reach the lentiform nucleus and the insula. From the cells of the thalamus a relay of fibers is prolonged to the cerebral cortex. www.bartleby.com /107/188.html   (3293 words)

Lab The frontal lobe is demarcated from the parietal lobe by the central sulcus of Rolando, and from the temporal lobe by the lateral fissure of Sylvius. The caudal end of the corpus callosum is known as the splenium, the middle portion as the body, the rostral bend as the genu, and the rostral termination as the rostrum. Cerebral veins are valueless and, in contrast to cerebral arteries, are interconnected by numerous functional anastomoses, both within a group and between superficial and deep groups. www.neurophys.wisc.edu /phys675lab/physiol_675_lab_i.htm   (4363 words)

Korean Journal of Radiology Anatomically, the cerebral aqueduct is divided into three parts, namely the pars anterior, ampulla and pars posterior, which are separated by two natural constrictions of the aqueductal lumen, one in the middle of the superior colliculus and the other at the level of the intercollicular sulcus (Fig. The values obtained with the baseline region at the anterior midbrain and the temporal lobe were 3.39 cm/sec and 3.30 cm/sec at the inlet of the aqueduct, 3.36 cm/sec and 3.87 cm/sec at the ampulla, and 4.08 cm/sec and 4.07 cm/sec at the pars posterior, respectively. Because the cerebral aqueduct is very small, ranging from 2-3 mm in diameter (2), adjusting the ROI precisely to the flow pixels might be difficult, and this could result in the necessity to perform partial volume averaging of static brain tissue. www.kjronline.org /abstract/view_articletext.asp?year=2004&page=81   (3330 words)

CV   (Site not responding. Last check: 2007-10-26) The third cerebral ventricle is a narrow vertical cavity located in the midline between the two halves of the diencephalon. In the midline of the dorsolateral wall the third ventricle becomes continuous with the narrow cerebral aqueduct (of Sylvius) which traverses the periaqueductal grey matter of the midbrain. In the rostral midline, the fourth ventricle communicates with the cerebral aqueduct (of Sylvius). www.umanitoba.ca /faculties/medicine/anatomy/cv.htm   (666 words)

AANS.org | Education and Meetings | AANS Scientific Journals | Neurosurgical Focus In three cases in Group 1, the cerebral aqueduct was occupied by a grayish mass that was ill defined, evenly flat, and the same consistency as the white matter. In the patients in Group 3, the orifice of the cerebral aqueduct was occupied by a large, globular, sharply demarcated, and evenly smooth mass. Whether tectal tumors are benign or malignant, they may extrude from the tectum into the lumen of the cerebral aqueduct and subsequently protrude from the orifice of the cerebral aqueduct into the posterior part of the third ventricle, push away the posterior commissure, and enlarge the orifice. aans.org /education/journal/neurosurgical/apr99/6-4-14.asp?...   (3255 words)

[No title]   (Site not responding. Last check: 2007-10-26) The correct answer is: cerebral aqueduct The cerebral aqueduct is the part of the ventricular system that carries cerebrospinal fluid from the third ventricle to the fourth ventricle. The correct answer is: middle cerebral artery The middle cerebral artery supplies blood to most of the lateral surface of cerebral hemispheres, and the temporal pole, including the frontal, parietal, and medial portions of the temporal lobes. The correct answer is: Cerebral aqueduct For CSF to travel from the third ventricle to the 4th ventricle and the central canal of the spinal cord, it must pass through the cererbral aqueduct. www-personal.umich.edu /~benwei/cgi-data/shared/linked/Scalp(PQ).doc   (3028 words)

MedFriendly.com: Cerebral aqueduct The cerebral aqueduct is a narrow opening in the brain that connects the third ventricle with the fourth ventricle, allowing cerebrospinal fluid to flow between these two areas. The cerebral aqueduct drains cerebrospinal fluid from the third ventricle to the fourth ventricle. In the case of a blockage of the cerebral aqueduct, cerebrospinal fluid from the lateral (side) ventricles and the third ventricle cannot get down to the fourth ventricle. www.medfriendly.com /cerebralaqueduct.html   (616 words)

Developmental Neuroanatomy   (Site not responding. Last check: 2007-10-26) The figure illustrates the cerebral cortex (the basal ganglia is an internal or subcortical structure). Below the cerebral aqueduct is the tegmentum, which contain tracts that relay signals (red nucleus and substantia nigra) (Nolte, 1981). Cerebral spinal fluid is a liquid that surrounds central nervous system that consist of sodium chloride, water, protein, glucose and potassium. nanonline.org /nandistance/nanneuro/modules/dev/dev.html   (1754 words)

BRAIN AREAS SUPPORTING CEREBRAL CORTEX FUNCTION   (Site not responding. Last check: 2007-10-26) Activity of the cerebral cortex is dependent upon both specific sensory input and nonspecific activating impulses from the brain stem. Sleep is an active physiological process for the cerebral cortex, and cerebral oxygen uptake is comparable to that of the waking state. The caudate nucleus is an elongated extension of the putamen. www.benbest.com /science/anatmind/anatmd7.html   (4149 words)

Oculomotor nerve The fibers of the oculomotor nerve arise from a nucleus in the midbrain, which lies in the gray substance of the floor of the cerebral aqueduct and extends in front of the aqueduct for a short distance into the floor of the third ventricle. From this nucleus the fibers pass forward through the tegmentum, the red nucleus, and the medial part of the substantia nigra, forming a series of curves with a lateral convexity, and emerge from the oculomotor sulcus on the medial side of the cerebral peduncle. It passes between the superior cerebellar and posterior cerebral arteries, and then pierces the dura mater in front of and lateral to the posterior clinoid process, passing between the free and attached borders of the tentorium cerebelli. www.1bx.com /en/Occulomotor_nerve.htm   (856 words)

Neuroanatomy Handout   (Site not responding. Last check: 2007-10-26) cerebral lobes: frontal (higher order analytical functions), parietal (higher order visual processing), temporal (auditory cortex, learning and memory), occipital (visual cortex). cerebral cortex - tissue layer that surrounds cerebral hemispheres. Communication between the hemispheres occurs through cerebral commissures, with the largest one being called the corpus callosum. www.unc.edu /gform-links/courses/pre2000fall/psyc023/Neuroanatomy.html   (346 words)

Cellular mechanisms involved in the stenosis and obliteration of the cerebral aqueduct of hyh mutant mice developing ...   (Site not responding. Last check: 2007-10-26) Cellular mechanisms involved in the stenosis and obliteration of the cerebral aqueduct of hyh mutant mice developing congenital hydrocephalus. During the first postnatal week the cerebral aqueduct becomes obliterated and a severe hydrocephalus develops. In the normal hyh mouse, the aqueduct is an irregularly shaped cavity with 3 distinct regions (rostral, middle, and caudal) lined by various types of ependyma. www.arclab.org /medlineupdates/abstract_14575238.html   (304 words)

Brain and Related Vasculature ribbon-like nerve tract that courses from the olfactory bulb to the cerebral cortex; it courses in the olfactory sulcus posterior cerebral a.; anterior and posterior temporal brs.; medial occipital a. unnamed tributaries from the falx cerebri and cerebral hemispheres anatomy.uams.edu /anatomyhtml/brain.html   (3969 words)

Aqueduct aqueduct : or give me death (2007) : cd : $12 Debut full-length release from Aqueduct, full of blown-out drum sounds, blip pop synths, pianos, and the masterful lyrics of David Terry. aqueduct : pistols at dawn (2004) : cd-ep : $6 www.barsuk.com /shop/aqueduct   (103 words)

www.patientcenters.com -- Hydrocephalus Centeri -- What is Hydrocephalus The meninges extend downward between the cerebral hemispheres (the cerebrum) to create the falx cerebri, and between the occipital lobes of the cerebrum and cerebellum to form the tentorium. The ventricular foramina consist of the intraventricular foramina (or the foramen of Monro), which connect the lateral ventricles with the third ventricle, and the foramina of Luschke and Magendie (located in the fourth ventricle) which provide a means for CSF to exit the ventricular system. The fourth ventricle is bordered by the medulla and the pons in the front, and the cerebellum behind, with the aqueduct of Sylvius extending upward into the third ventricle. www.patientcenters.com /hydrocephalus/news/whatishydro.html   (5879 words)

Dr Cerebral Spinal Fluid (CSF) is produced by the __________ _________ and the CSF is located in the? Third ventricle to fourth ventricle to cerebral aqueduct to cerebral canal of the spinal cord to the subarachnoid space to the lateral ventricles The lateral ventricles to the third ventricle to the cerebral aqueduct to the fourth ventricle to the subarachnoid space to the central canal of the spinal cord clem.mscd.edu /~lockwool/physio/anatomycomb.htm   (712 words)

Kathleen Somera - JUR Paper The present study aims to determine abnormalities in lateral ventricles and cerebral aqueduct in a rat strain with inherited hydrocephalus associated with aqueduct stenosis and lateral ventricle dilatation. In hydrocephalic brains, nestin was expressed in the floor of the aqueduct, neuroepithelial lining of the lateral ventricles, and fibers in the subventricular zone. The lack of immunoreactivity in the aqueduct roof may be due to the absence of the SCO in the occluded aqueduct of hydrocephalic H-Tx rats used in this study. www.clas.ufl.edu /jur/200303/papers/paper_somera.html   (2447 words)

Dysfunction of axonemal dynein heavy chain Mdnah5 inhibits ependymal flow and reveals a novel mechanism for ... The proximal (F) and the distal part of the aqueduct (G) are closed and lack connection, because the central part of the aqueduct is missing. During late embryonic brain development the cerebral aqueduct connecting the third and fourth ventricle is formed and becomes the narrowest part of the cerebrospinal fluid system. Wessels, M.W., den Hollander, N.S. and Willems, P.J. (2003) Mild fetal cerebral ventriculomegaly as a prenatal sonographic marker for Kartagener syndrome. hmg.oxfordjournals.org /cgi/content/full/13/18/2133   (3831 words)

Specialized ependymal ridges in the cerebral aqueduct of the rat.   (Site not responding. Last check: 2007-10-26) Specialized ependymal ridges in the cerebral aqueduct of the rat. Specialized ependymal ridges in the cerebral aqueduct of the rat.Ependymal cells resembling tanycytes extend between the lumen of the aqueduct and the subependymal capillaries. Novel paired ependymal ridges (EPRS) have been identified in the ventrolateral wall of the cerebral aqueduct of the rat. www.pdg.cnb.uam.es /UniPub/iHOP/gp/3841612.html   (144 words)

[No title] The answer is C. The cerebral aqueduct also called the aqueduct of Sylvius connects the third ventricle to the fourth ventricle. The answer is D. The transverse cerebral fissure is where the tentorium cerebelli normally would reside separating the occipital lobes of the cerebral hemisphere from the cerebellum. The answer is D. Both the mesencephalic nucleus of V and the locus ceruleus lie lateral to the cerebral aqueduct in the upper pons. www.kumc.edu /research/medicine/pharmacology/CAI/webCAI/anatomy/umo3.wbc   (3358 words)

Mesencephalon - Wikipedia, the free encyclopedia The trochlear nerve comes out of the posterior surface of the midbrain, below the inferior colliculus. On the anterior surface the cerebral peduncles are prominent. The cerebral aqueduct runs through the midbrain, and is the communication between the third and fourth ventricle. en.wikipedia.org /wiki/Midbrain   (351 words)

Opening to cerebral aqueduct - definition from Biology-Online.org Opening to cerebral aqueduct - definition from Biology-Online.org entrance to the cerebral aqueduct (of Sylvius) from the caudal part of the third ventricle. Synonym: aditus ad aqueductum cerebri, bartholin's anus, opening to cerebral aqueduct. www.biology-online.org /dictionary/Opening_to_cerebral_aqueduct   (110 words)

Hydrocephalus   (Site not responding. Last check: 2007-10-26) Hydrocephalus that is congenital (present at birth) is thought to be caused by a complex interaction of genetic and environmental factors. Aqueductal stenosis, an obstruction of the cerebral aqueduct, is the most frequent cause of congenital hydrocephalus. Fluid that circulates throughout the cerebral ventricles and around the spinal cord within the spinal canal. www.lifesteps.com /gm/Atoz/ency/hydrocephalus.jsp   (1187 words)

[No title] Mesencephalon--the embryonic midbrain; the part associated with the second cephalic dilataion of the neural tube; it includes the cerebral peduncles, porpora quadrigemina (superior and inferior colliculi) and cerebral aqueduct. Know the lobes of the cerebral hemispheres (frontal, parietal, temporal and occipital lobes), the associated fissures, sulci and boundaries (longitudinal fissure, transverse cerebral fissure, central sulcus, lateral sulcus) and the interconnecting corpus callosum and the pineal body. Know the venous drainage of the brain (cerebral veins, great cerebral vein) and the distribution of the venous blood to the previously studies dural venous sinuses. www.med.unc.edu /~kimplera/classes/anatomy/hn6.doc   (870 words)

Cerebral Aqueduct Cerbral Aqueduct is a narrow channel through the midbrain which connects the third and fourth ventricles This channel approximately three-fourths of an inch long that drains cerebrospinal fluid (CSF) from the third ventricle to the fourth ventricle through the midbrain. This is a common site of obstruction causing childhood hydrocephalus. The Cerbral Aqueduct is also called the Aqueduct of Sylvius. psyweb.com /Brain/cavent.jsp   (60 words)

The Virtual Hospital: The Human Brain: Chapter 5: The Cerebral Hemispheres   (Site not responding. Last check: 2007-10-26) Dorsomedial to the substantia nigra are the superior cerebellar peduncles and their decussation, and the medial longitudinal fasciculi lie dorsal to the previously mentioned decussation. The root fibers arising from the trochlear nuclei form a decussation dorsal to the mesencephalic aqueduct, and they are the only cranial nerves that cross completely and that leave the dorsal aspect of the brain stem. Dorsolateral to the superior cerebellar peduncles are the somewhat dispersed fibers of the central tegmental tracts. www.vh.org /Providers/Textbooks/BrainAnatomy/Ch5Text/Section26.html   (491 words)

Lecture 9 1/23/2004   (Site not responding. Last check: 2007-10-26) Great cerebral vein of Galen (drains interior of brain) leads to straight sinus. Third ventricle is the central structure leading to cerebral aqueduct and 4th ventricle 17) Interpeduncular fossa- have a bunch of CSF (cistern), this is NOT the central aqueduct, this picture is too far forward, we have to go beyond the pons to see the cerebral aqueduct. www.georgetown.edu /users/rgk8/neuronr9.htm   (694 words)

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