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Primary Fissure Of Cerebellum
The monticulus of the cerebellum is divided by the primary fissure (or preclival fissure) into an anterior, raised part, the culmen or summit, and a posterior sloped part, the clivus; the quadrangular lobule is similarly divided. Additional images File:Primary fissure of cerebellum -- animation.gif, Animation. Primary fissure shown in red. File:Primary fissure of cerebellum --- animation.gif, Close up animation. Primary fissure shown in red. File:Cerebellar lobes by Sanjoy Sanyal.webm, Dissection video (1 min 20 s). Demonstrating the three cerebellar lobes. "V-shaped fissure" is the primary fissure. See also * Anatomy of the cerebellum The anatomy of the cerebellum can be viewed at three levels. At the level of gross anatomy, the cerebellum consists of a tightly folded and crumpled layer of cortex, with white matter underneath, several deep nuclei embedded in the white matter ... References External links * https://web.archive.org/web/20080614064333/http://www.ib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterior Lobe Of Cerebellum
The anterior lobe of cerebellum is the portion of the cerebellum responsible for mediating unconscious proprioception. Inputs into the anterior lobe of the cerebellum are mainly from the spinal cord. It is sometimes equated to the "paleocerebellum". Clinical significance Anterior lobe syndrome When a person gets most of their calories from alcohol (chronic alcoholism) the anterior lobe can deteriorate due to malnutrition. This is known as anterior lobe syndrome, and it causes unsteady gait. Additional images File:Anterior lobe of cerebellum -- animation.gif, Animation. Anterior lobe shown in red. File:Anterior lobe of cerebellum --- animation.gif, Close up animation. Anterior lobe shown in red. File:Cerebellar lobes by Sanjoy Sanyal.webm, Dissection video (1 min 20 s). Demonstrating the three cerebellar lobes. References External links * NIF Search - Anterior Lobe of the Cerebellumvia the Neuroscience Information Framework The Neuroscience Information Framework is a r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posterior Lobe Of Cerebellum
The posterior lobe of cerebellum or neocerebellum, is the portion of the cerebellum below the primary fissure. The posterior lobe is much larger than anterior lobe. The anterior lobe is separated from the posterior lobe by the primary fissure, and the posterolateral fissure separates flocculonodular lobe from the posterior lobe. Sometimes, the posterior lobe of cerebellum is called the neocerebellum since phylogenetically it is the newest part of the cerebellum. It plays an important role in fine motor coordination, specifically in the inhibition of involuntary movement via inhibitory neurotransmitters, especially GABA. The posterior lobe receives input mainly from the brainstem (i.e., reticular formation and inferior olivary nucleus The inferior olivary nucleus (ION), is a structure found in the medulla oblongata underneath the superior olivary nucleus.Gado, Thomas A. Woolsey; Joseph Hanaway; Mokhtar H. (2003). The brain atlas a visual guide to the human central nervous syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerebellum
The cerebellum (Latin for "little brain") is a major feature of the hindbrain of all vertebrates. Although usually smaller than the cerebrum, in some animals such as the mormyrid fishes it may be as large as or even larger. In humans, the cerebellum plays an important role in motor control. It may also be involved in some cognition, cognitive functions such as attention and language as well as emotion, emotional control such as regulating fear and pleasure responses, but its movement-related functions are the most solidly established. The human cerebellum does not initiate movement, but contributes to Motor coordination, coordination, precision, and accurate timing: it receives input from sensory systems of the spinal cord and from other parts of the brain, and integrates these inputs to fine-tune motor activity. Cerebellar damage produces disorders in Fine motor skill, fine movement, Equilibrioception, equilibrium, Human positions, posture, and motor learning in humans. Anatomica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culmen (cerebellum)
The culmen is the portion of the anterior vermis adjacent to the primary fissure of cerebellum. The culmen and the anterior parts of the quadrangular lobules form the lobus culminis. Additional Images File:Slide2AST.JPG, Cerebellum. Superior surface. File:Slide3AST.JPG, Cerebellum. Superior surface. References External links * https://web.archive.org/web/20010514005529/http://www.ib.amwaw.edu.pl/anatomy/atlas/image_11e.htm * https://web.archive.org/web/20080614064333/http://www.ib.amwaw.edu.pl/anatomy/atlas/image_06e.htm NIF Search - Culmenvia the Neuroscience Information Framework The Neuroscience Information Framework is a repository of global neuroscience web resources, including experimental, clinical, and translational neuroscience databases, knowledge bases, atlases, and genetic/genomic resources and provides many auth ... Cerebellum {{neuroanatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clivus (anatomy)
The clivus (, Latin for "slope"), or Blumenbach clivus, is a bony part of the cranium The skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium and the mandible. In humans, the ... at the base of the skull. It is a shallow depression behind the dorsum sellae of the sphenoid bone. It slopes gradually to the anterior part of the basilar occipital bone at its junction with the sphenoid bone. It extends to the foramen magnum. It is related to the pons and the abducens nerve (CN VI). Structure The clivus is a shallow depression behind the dorsum sellae of the sphenoid bone. It slopes gradually to the anterior part of the basilar occipital bone at its junction with the sphenoid bone. Synchondrosis of these two bones forms the clivus. The clivus extends inferiorly to the foramen magnum. On axial planes, it sits just posterior to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatomy Of The Cerebellum
The anatomy of the cerebellum can be viewed at three levels. At the level of gross anatomy, the cerebellum consists of a tightly folded and crumpled layer of cortex, with white matter underneath, several deep nuclei embedded in the white matter, and a fluid-filled ventricle in the middle. At the intermediate level, the cerebellum and its auxiliary structures can be broken down into several hundred or thousand independently functioning modules or compartments known as microzones. At the microscopic level, each module consists of the same small set of neuronal elements, laid out with a highly stereotyped geometry. Gross anatomy The cerebellum is located at the base of the brain, with the large mass of the cerebral cortex above it and the portion of the brainstem called the pons in front of it. It is separated from the overlying cerebrum by a layer of tough dura mater; all of its connections with other parts of the brain travel through the pons. Anatomists classify the cerebel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
