medical meaning of gyrus
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Definitions of Human Brain Components In neuroanatomy, a gyrus is a ridge on the cerebral cortex. It is generally surrounded by one or more sulci. Gyri and sulci create the folded appearance of the brain in humans and other mammals.
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Gyrus Pachygyria (meaning thick or fat gyri) is a congenital malformation of the cerebral hemisphere, resulting in unusually thick gyri in the cerebral cortex. Pachygyria is used to describe brain characteristics in association with several neuronal migration disorders; most commonly relating to lissencephaly.
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gyri A gyrus along the medial (inner) edge of the temporal lobe of each cerebral hemisphere; it is bounded by the hippocampal fissure medially and the collateral sulcus laterally. The medial edge of the parahippocampal gyrus is called the subiculum; the remainder of the gyrus is called the entorhinal cortex.
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gluteus [glo̅o̅tē′əs] any of the three muscles that form the buttocks: the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus is a large muscle with an origin in the ilium, the sacrum, and the sacrotuberous ligament and an insertion in the gluteal tuberosity of the femur and the fascia lata. It acts to extend the thigh.
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Gyrus The gyri are part of a system of folds and ridges that create a larger surface area for the human brain and other mammalian brains. Because the brain is confined to the skull, brain size is limited.achygyria (meaning thick or fat gyri) is a congenital malformation of the cerebral hemisphere, resulting in unusually thick gyri in the cerebral cortex. Pachygyria is used to describe brain characteristics in association with several neuronal migration disorders; most commonly relating to lissencephaly.
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cingulate gyrus cingulate gyrus. 1. a long, curved convolution of the medial surface of the cortical hemisphere, arched over the corpus callosum from which it is separated by the deep sulcus of corpus callosum; together with the parahippocampal gyrus, with which it is continuous behind the corpus callosum, it forms the fornicate gyrus.
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- Noun. 1. central gyrus-either of two gyri on either side of the central sulcus. gyrus, convolution-a convex fold or elevation in the surface of the brain. precentral gyrus-the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area.oun. 1. central gyrus-either of two gyri on either side of the central sulcus. gyrus, convolution-a convex fold or elevation in the surface of the brain. precentral gyrus-the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area.
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precentral gyrus precentral gyrus. [-sen′trəl]. Etymology: L, prae + Gk, kentron, center, gyros, turn. a convolution of the cerebral hemisphere immediately anterior to the central sulcus of the cerebrum in each hemisphere. It is the location of the motor strip that controls voluntary movements of the contralateral side of the body.Also called anterior central gyrus.rontal gyrus any of the three (inferior, middle, and superior) gyri of the frontal lobe. fusiform gyrus one on the inferior surface of the hemisphere between the inferior temporal and parahippocampal gyri, consisting of a lateral (lateral occipitotemporal gyrus) and a medial (medial occipitotemporal gyrus) part.
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Gynoecium Moss plants with gynoecia, clusters of archegonia at the apex of each shoot. Gynoecium (from Ancient Greek γυνή, gyne, meaning woman, and οἶκος, oikos, meaning house) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds.
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- The precentral gyrus commands voluntary movements of skeletal muscles within the body. It is a small section of the brain that enables all bodily movement after receiving signals from another area of the brain. Continue Reading.
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- Gluteus definition, any of several muscles of the buttocks, especially the gluteus maximus. See more.
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Biology Prefixes and Suffixes: glyco-, gluco- Biology Prefixes and Suffixes: glyco-, gluco-. The prefix (glyco-) means a sugar or refers to a substance that contains a sugar. It is derived from the Greek glukus for sweet. (Gluco-) is a variant of (glyco-) and refers to the sugar glucose.
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- *Gyrus (gyri)-is a ridge on the cerebral cortex. Folds on the brain material. Many ridges called convolutions, or gyri, or gyrus, separated by grooves, mark the cerebrum 's surface. *Sulcus (sulci)- shallow grooves on the brain.Generally, a shallow to somewhat deep groove is called a sulcus, or sulci, and a very deep groove is called a fissure.Posted by Saketh Raghavan (student) on 15/3/13.Gyrus (gyri)-is a ridge on the cerebral cortex. Folds on the brain material. Many ridges called convolutions, or gyri, or gyrus, separated by grooves, mark the cerebrum 's surface. *Sulcus (sulci)- shallow grooves on the brain.
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gm (g) [gram] a unit of mass in the SI system; one thousandth of a kilogram. (See also Table of Weights and Measures in the Appendix and si units.) Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition.
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- You can see how this plays out with the redesigned 2013 Nissan Altima, which comes in base 2.5 (denoting the engine size in liters), S, SV and SL trim (or price) levels.
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- (See paragraph in Water Service Costs). Minimum Charges for any sewer service installation will be for a total of five (5) lineal feet for Class I. through 5 and a total of ten (10) lineal feet for Class 6 through 9.he following is the schedule of prices to be charged by the Water Department, Division of Sewer. Maintenance, City of Dayton, Ohio for Sanitary and Storm Sewer service taps, sewer service excavation, laying of pipe, backfilling and restoration of the surfaces in streets and alleys on and after July 1, 2007.
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- Medical Definition of Gluteus maximus. Gluteus maximus: The greatest gluteal muscle and the biggest muscle in the human body. The gluteus maximus forms the bulk of the buttocks. It acts to extend the upper leg, spread it, and turn it outward. There are two other gluteal muscles called the gluteus medius and gluteus minimus.
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cingulate gyrus Medical Definition of cingulate gyrus. : a medial gyrus of each cerebral hemisphere that partly surrounds the corpus callosum.
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- Business Lists. The Classic Lists that we have sold for years contains our business database: Company name, Street Address, City, State, Zip Code, phone number, business code (these codes are similar to SIC codes), and a business description.
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Gyroscope A gyroscope (from Ancient Greek γῦρος gûros, circle and σκοπέω skopéō, to look) is a spinning wheel or disc in which the axis of rotation is free to assume any orientation by itself. When rotating, the orientation of this axis is unaffected by tilting or rotation of the mounting, according to the conservation of angular momentum.
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cingulate gyrus frontal gyrus any of the three (inferior, middle, and superior) gyri of the frontal lobe. fusiform gyrus one on the inferior surface of the hemisphere between the inferior temporal and parahippocampal gyri, consisting of a lateral (lateral occipitotemporal gyrus) and a medial (medial occipitotemporal gyrus) part.
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- precentral gyrus-the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area.central gyrus-either of two gyri on either side of the central sulcus.recentral gyrus-the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area.
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What is a Gyrus? 1 Postcentral gyrus - Found on the lateral surface of the parietal lobe, and acts as the primary somesthetic area of the brain. 2  Superior parietal lobule - Found on the lateral surface of the parietal lobe, involved in somatosensory activity.
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Polymicrogyria The surface of the brain normally has many ridges or folds, called gyri. In people with polymicrogyria, the brain develops too many folds, and the folds are unusually small. The name of this condition literally means too many (poly-) small (micro-) folds (-gyria) in the surface of the brain.
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precentral gyrus a convolution of the cerebral hemisphere immediately anterior to the central sulcus of the cerebrum in each hemisphere. It is the location of the motor strip that controls voluntary movements of the contralateral side of the body. Also called anterior central gyrus.
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Polymicrogyria Polymicrogyria is a condition characterized by abnormal development of the brain before birth. The surface of the brain normally has many ridges or folds, called gyri. In people with polymicrogyria, the brain develops too many folds, and the folds are unusually small.