NationMaster - Encyclopedia: Cerebral crus

The cerebral crus is the anterior portion of the cerebral peduncle which contains the motor tracts. Image File history File links Cn3nucleus. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... NeuroNames is a system of nomenclature for the brain and related structures. ... Elseviers logo. ... The cerebral peduncle, by most classifications, is everything in the mesencephalon except the tectum. ...

In some older texts, it is used as a synonym for the entire cerebral peduncle, not just the anterior portion of it.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. The University of Michigan, Ann Arbor (UM, U of M or U-M) is a coeducational public research university in the state of Michigan, and one of the foremost universities in the United States. ... The University of Michigan, Ann Arbor (UM, U of M or U-M) is a coeducational public research university in the state of Michigan, and one of the foremost universities in the United States. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body (or Grays Anatomy as it has more commonly become known) is an anatomy textbook widely regarded as a classic work on human anatomy. ...

Category: Anatomy stubs Italic text // ahh addiing sum spiice iin hurr`` For other uses, see Brain (disambiguation). ... In biological anatomy, the mesencephalon (or midbrain) is the middle of three vesicles that arise from the neural tube that forms the brain of developing animals. ... The tectum (Latin: roof) is the dorsal part of the midbrain, derived in embryonic development from the alar plate of the neural tube. ... Corpora quadrigemina (Latin: four twins) is the collective name given to both pairs of the inferior and superior colliculi. ... The paired inferior colliculi together with the superior colliculi form the eminences of the corpora quadrigemina. ... The superior colliculus is part of the brain that sits below the thalamus and surrounds the pineal gland in the mesencephalon of vertebrate brains. ... The subcommissural organ is a circumventricular organ consisting of ependymal cells which secrete somatostatin. ... Pretectum is a structure located in the forebrain. ... The cerebral peduncle, by most classifications, is everything in the mesencephalon except the tectum. ... The midbrain tegmentum is part of the midbrain extending from the substantia nigra to the cerebral aqueduct. ... Periaqueductal Gray (PAG; also called the central gray) is the midbrain grey matter that is located around the cerebral aqueduct within the midbrain. ... 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. ... The dorsal raphe nucleus consists of rostral and caudal subdivisions. ... Grays FIG. 712â€“ Transverse section of mid-brain at level of superior colliculi. ... The pedunculopontine nucleus (PPN) is located in the brainstem, caudal to the substantia nigra and adjacent to the superior cerebellar peduncle. ... The red nucleus is a structure in the rostral midbrain involved in motor coordination. ... The medial longitudinal fasciculus (MLF) is a group of axons on each side of the brainstem, that carry information about the direction that the eyes should move. ... The rostral interstitial nucleus of medial longitudinal fasciculus (riMLF) is a portion of the medial longitudinal fasciculus which controls vertical gaze. ... The medial lemniscus, also known as Reils band or Reils ribbon, is a pathway in the brainstem that carries sensory information from the gracile and cuneate nuclei to the thalamus. ... The lateral lemniscus is a tract of axons in the brainstem that carries information about sound from the cochlear nucleus to various brainstem nuclei and ultimately the contralateral inferior colliculus of the midbrain. ... 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. ... The Edinger-Westphal nucleus is the accessory parasympathetic nucleus of the oculomotor nerve, supplying the constricting muscles of the iris. ... The nucleus of the trochlear nerve is located in the midbrain, at the level of the inferior colliculus. ... The mesencephalic nucleus is involved with proprioception, that is, the feeling of position of the muscles. ... The cerebral peduncle, by most classifications, is everything in the mesencephalon except the tectum. ... The substantia nigra, (Latin for black substance, Soemering) or locus niger is a heterogeneous portion of the midbrain, separating the pes (foot) from the tegmentum (covering), and a major element of the basal ganglia system. ... The corticospinal or pyramidal tract is a massive collection of axons that travel between the cerebral cortex of the brain and the spinal cord. ... The corticobulbar (or corticonuclear) tract is a white matter pathway connecting the cerebral cortex to the brainstem (the term bulbar referring to the brainstem). ... Corticopontine fibers connect the voluntary impulses from the cerebral cortex to the pons. ... The frontopontine fibers are situated in the medial fifth of the base of the cerebral peduncles; they arise from the cells of the frontal lobe and end in the nuclei of the pons. ... In the human nervous system the temporopontine fibers are lateral to the cerebrospinal fibers; they originate in the temporal lobe and end in the nuclei pontis. ...

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