what is definition of cortex?
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Lexic.us Definition of Cortex. 1. Noun. (context: countable anatomy) The outer layer of an internal organ or body structure, such as the kidney or the brain. ¹. 2. Noun. (context: uncountable botany) The tissue of a stem or root that lies inward from the epidermis, but exterior to the vascular tissue.
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Parts of the Brain - Fuctions Cerebral Cortex. the wrinkled, outer layer of gray matter that covers the cerebral hemispheres; controls higher mental functions, such as thought, language, learning, memory, emotions and control of voluntary movement.
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Cortex (botany) Epidermis. A cortex is the outermost layer of a stem or root in a plant, or the surface layer or skin of the nonfruiting part of the body of some lichens. In botany, the cortex is the outermost layer of the stem or root of a plant, bounded on the outside by the epidermis and on the inside by the endodermis. In plants, it is composed mostly of differentiated cells, usually large thin-walled parenchyma cells of the ground tissue system.
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cortex cortex. in botany, term generally applied to the outer soft tissues of the leaves, stems, and roots of plants. Cortical cells of the leaves and outer layers of nonwoody stems contain chloroplasts, and are modified for food storage (usually in the form of starch) in roots and the inner layers of stems and seeds.
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Cerebral cortex The cerebral cortex is the largest region of the mammalian brain and plays a key role in memory, attention, perception, cognition, awareness, thought, language, and consciousness. The cerebral cortex is the most anterior (rostral) brain region and consists of an outer zone of neural tissue called gray matter, which contains neuronal cell bodies.
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- Cerebral cortex: A thin mantle of gray matter about the size of a formal dinner napkin covering the surface of each cerebral hemisphere. The cerebral cortex is crumpled and folded, forming numerous convolutions (gyri) and crevices (sulci).
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cortex Definition of cortex plural cortices play \ ˈkȯr-tə-ˌsēz \ or cortexes 1 a (1): the outer or superficial part of an organ or bodily structure (such as the kidney, adrenal gland, or cerebellum or a bone); especially: cerebral cortex
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- Insular cortex. In each hemisphere of the mammalian brain the insular cortex (often called insula, or insular lobe) is a portion of the cerebral cortex folded deep within the lateral sulcus (the fissure separating the temporal lobe from the parietal and frontal lobes).
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- In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe.The PFC contains Brodmann areas 9, 10, 11, 12, 46, and 47. third definition of the prefrontal cortex is the area of frontal cortex whose electrical stimulation does not lead to observable movements. For example, in 1890 David Ferrier used the term in this sense.
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Cortex System The Cortex System is a generic RPG system based on the Sovereign Stone System, and was developed by Margaret Weis Productions, Ltd for the Serenity Role Playing Game.
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Motor cortex The motor cortex is the region of the cerebral cortex involved in the planning, control, and execution of voluntary movements. Classically the motor cortex is an area of the frontal lobe located in the dorsal precentral gyrus immediately anterior to the central sulcus.
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cortex medical Definition of cortex plural cortices play \ ˈkȯrt-ə-ˌsēz \ or cortexes 1 a: the outer or superficial part of an organ or body structure (as the kidney, adrenal gland, or a hair); especially: cerebral cortex
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Advanced Abdominal Imaging The renal cortex is the outer portion of the kidney between the renal capsule and the renal medulla.In the adult, it forms a continuous smooth outer zone with a number of projections (cortical columns) that extend down between the pyramids.t contains the renal corpuscles and the renal tubules except for parts of the loop of Henle which descend into the renal medulla. It also contains blood vessels and cortical collecting ducts. The renal cortex is the part of the kidney where ultrafiltration occurs. Erythropoietin is produced in the renal cortex.
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visual cortex visual cortex the area of the occipital lobe of the cerebral cortex concerned with vision; the striate cortex is also called the first visual area, and the adjacent second and third visual areas serve as its association areas.
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renal cortex renal cortex, the highly vascularized granular outer layer of the kidney, containing approximately 1.25 million glomeruli and convoluted tubules, which filter body wastes from the blood, reclaim useful materials, and dispose of the remainder as urine.erebral cortex (cortex cerebra´lis) the convoluted layer of gray matter covering each cerebral hemisphere. See also brain. renal cortex the granular outer layer of the kidney, composed mainly of glomeruli and convoluted tubules, extending in columns between the pyramids that constitute the renal medulla.
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- Eggs are well known for their protein but they also contain vitamins B-12 and A. One large egg has 78 calories and 6.3 grams of quality protein. This means that women get 14 percent and men gain 11 percent of their recommended daily allowance of protein.
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motor cortex cortex, motor. Area of the frontal lobe of the brain just anterior to the central sulcus which is responsible for voluntary movements of the eyes (as well as other voluntary movements of other parts of the body).The motor cortex in each hemisphere controls mainly muscles on the opposite side of the body.ortex, motor. Area of the frontal lobe of the brain just anterior to the central sulcus which is responsible for voluntary movements of the eyes (as well as other voluntary movements of other parts of the body).
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Eukaryotic Chromosome Structure Chromosomes contain the long strands of DNA that carry genetic information. They are the unit of DNA replication in living cells. Typical prokaryotic cells contain a single circular chromosome. Eukaryotic cells, with their much larger genomes, have multiple, linear chromosomes.
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Brain Insular cortex. In each hemisphere of the mammalian brain the insular cortex (also insula and insular lobe) is a portion of the cerebral cortex folded deep within the lateral sulcus (the fissure separating the temporal lobe from the parietal and frontal lobes).
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Cerebral cortex The cerebral cortex is the cerebrum 's (brain) outer layer of neural tissue in humans and other mammals.It is divided into two cortices, along the sagittal plane: the left and right cerebral hemispheres divided by the medial longitudinal fissure.he cerebral cortex plays a key role in memory, attention, perception, awareness, thought, language, and consciousness. The human cerebral cortex is 2 to 4 millimetres (0.079 to 0.157 in) thick. In large mammals, the cerebral cortex is folded, giving a much greater surface area in the confined volume of the skull.
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visual cortex The region of the cerebral cortex occupying the entire surface of the occipital lobe and receiving the visual data from the lateral geniculate body of the thalamus. Also called visual area.
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Prefrontal cortex For the reptile scale, see Prefrontal scale. In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe. The PFC contains Brodmann areas 9, 10, 11, 12, 46, and 47. third definition of the prefrontal cortex is the area of frontal cortex whose electrical stimulation does not lead to observable movements. For example, in 1890 David Ferrier used the term in this sense.
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cortex a: the typically parenchymatous layer of tissue external to the vascular tissue and internal to the corky or epidermal tissues of a green plant; broadly: all tissues external to the xylem b: an outer or investing layer of various algae, lichens, or fungi. See cortex defined for English-language learners.
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What Is a Plant Cortex? Quick Answer. The plant cortex is the tissue located between the vascular bundles and epidermis. The cortex is responsible for the storage of photosynthetic products and the uptake of water and minerals. It also consists of a large amount of thin-walled parenchyma cells, which maintain the structure of a plant.
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cortex 1. The outer layer of an organ or body part, such as the cerebrum or the adrenal glands. 2. The region of tissue next to the outermost layer of plant stems and roots. The cortex lies between the epidermis (the outermost layer) and the vascular tissue.
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The Cerebral Cortex The Cerebral Cortex. The cerebral cortex is the most important part of our brain (at least in the field of psychology) because it is what makes us human. The cerebral cortex (sometimes referred to as called gray matter, is actually densely packed neurons.