anterior central convolution

См. также в других словарях:

• convolution — 1. A coiling or rolling of an organ. 2. Specifically, a gyrus of the cerebral or cerebellar cortex. [L. convolutio] angular c. SYN: angular gyrus. anterior central c. SYN: precentral gyrus. ascending frontal c. SYN: precentral gyrus. ascending …   Medical dictionary

• gyrus — One of the prominent rounded elevations that form the cerebral hemispheres, each consisting of an exposed superficial portion and a portion hidden from view in the wall and floor of the sulcus. [L. fr. G. gyros, circle] angular g. [TA] a folded… …   Medical dictionary

• gyrus precentralis — [TA] precentral gyrus: the convolution of the frontal lobe lying between the precentral and central sulci; the primary motor area of the cerebral cortex for the face, upper extremity, trunk and hip. Called also anterior central g …   Medical dictionary

• nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

• Sulcus — From the Latin for a groove, furrow, or trench. In medicine, there are many sulci (plural of sulcus) as, for example, the superior pulmonary sulcus. * * * 1. [TA] One of the grooves or furrows on the surface of the brain, bounding the several… …   Medical dictionary

• Fissure — A cleft or groove. A fissure can be normal or abnormal. A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is distinctly abnormal. It is a painful… …   Medical dictionary

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

• renal system — ▪ anatomy Introduction  in humans (human body), organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine.       In many respects the human excretory, or… …   Universalium

• brain — brainlike, adj. /brayn/, n. 1. Anat., Zool. the part of the central nervous system enclosed in the cranium of humans and other vertebrates, consisting of a soft, convoluted mass of gray and white matter and serving to control and coordinate the… …   Universalium

• precentral — Referring to the cerebral convolution immediately anterior to the central sulcus : p. gyrus. * * * pre·cen·tral sen trəl adj situated in front of the central sulcus of the brain <the precentral motor cortex> * * * pre·cen·tral (pre… …   Medical dictionary

• linguistics — /ling gwis tiks/, n. (used with a sing. v.) the science of language, including phonetics, phonology, morphology, syntax, semantics, pragmatics, and historical linguistics. [1850 55; see LINGUISTIC, ICS] * * * Study of the nature and structure of… …   Universalium