cortex

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Related to cortexes: cortices, cerebral cortices, renal cortices

cortex

 [kor´teks] (pl. cor´tices) (L.)
the outer layer of an organ or other structure, as distinguished from its inner substance or medulla. adj., adj cor´tical.
adrenal cortex (cortex of adrenal gland) the outer, firm layer comprising the larger part of the adrenal gland; it secretes mineralocorticoids, androgens, and glucocorticoids.
cerebellar cortex the superficial gray matter of the cerebellum.
cerebral 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.
striate cortex part of the occipital lobe that receives the fibers of the optic radiation and serves as the primary receiving area for vision. Called also first visual area.
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.

cor·tex

, gen.

cor·ti·cis

, pl.

cor·ti·ces

(kōr'teks, -ti-sis, -ti-sēz), [TA]
The outer portion of an organ, such as the kidney, as distinguished from the inner, or medullary, portion.
[L. bark]

cortex

/cor·tex/ (kor´teks) pl. cor´tices   [L.] the outer layer of an organ or other structure, as distinguished from its inner substance.cor´tical
adrenal cortex  the outer, firm layer comprising the larger part of the adrenal gland; it secretes many steroid hormones including mineralocorticoids, glucocorticoids, androgens, 17-ketosteroids, and progestins.
cerebellar cortex , cortex cerebella´ris the superficial gray matter of the cerebellum.
cerebral cortex , cortex cerebra´lis the convoluted layer of gray substance covering each cerebral hemisphere; see archicortex, paleocortex, and neocortex.
cortex len´tis  the softer, external part of the lens of the eye.
motor cortex  see under area.
provisional cortex  the cortex of the fetal adrenal gland that undergoes involution in early fetal life.
renal cortex , cortex re´nis the outer part of the substance of the kidney, composed mainly of glomeruli and convoluted tubules.
striate cortex  the part of the occipital lobe of the cerebral cortex that is the primary receptive area for vision.
cortex of thymus  the outer part of each lobule of the thymus; it consists chiefly of closely packed lymphocytes (thymocytes) and surrounds the medulla.
visual cortex  the area of the occipital lobe of the cerebral cortex concerned with vision.

cortex

(kôr′tĕks′)
n. pl. cor·tices (-tĭ-sēz′) or cor·texes
1. Anatomy
a. The outer layer of an internal organ or body structure, as of the kidney or adrenal gland.
b. The outer layer of gray matter that covers the surface of the cerebral hemisphere.
2. Cytology The region of the cytoplasm of a eukaryotic cell that lies just under the plasma membrane and contains a network of actin filaments and associated proteins that determine the shape of the cell.

cortex

pl. cortices [kôr′tisēz]
Etymology: L, bark
the outer layer of a body organ or other structure, as distinguished from the internal substance. cortical, adj.

cor·tex

, pl. cortices (kōrteks, -ti-sēz) [TA]
The outer portion of an organ, such as the kidney, as distinguished from the inner, or medullary, portion.
[L. bark]

cortex

The outer distinguishable zone of any solid organ. The cerebral cortex, for instance, is the outer layer of grey matter of the brain consisting of nerve cell bodies. The adrenal cortex is quite different in function from the inner part.

cortex

an outer zone of any organ or part, as in the mammalian kidney and brain, or the layer of plant tissue outside the VASCULAR BUNDLES but inside the epidermis.

Cortex

The thin convoluted surface of the brain comprised primarilyof cell bodies of neurons.

cortex

from the Latin meaning 'bark' - the outer layer of an organ, e.g. of the adrenal glands, the kidneys, parts of the brain (cerebral cortex, cerebellar cortex). adj cortical.

cortex

outer area of an organ
  • adrenal cortex outer part of adrenal glands, secreting corticosteroids, i.e. glucocorticoid, mineralocorticoid and sex hormones

  • bone cortex periosteum-covered, dense outer area of bone, overlying the trabeculated medulla

  • cerebellar cortex convoluted surface layer of cerebellum

  • motor cortex posterior area of cerebral cortex area influencing muscle movements (of face, neck, trunk and limbs)

  • renal cortex outer part of the kidney, containing glomeruli, proximal and distal convoluted tubules

  • sensory cortex anterior area of cerebral cortex receiving incoming sensory information

cor·tex

, pl. cortices (kōrteks, -ti-sēz) [TA]
The outer portion of an organ, as distinguished from the inner, or medullary, portion.
[L. bark]

cortex,

n the outer layer of an organ or other structure.
cortex, adrenal,
n the outer layer of the adrenal gland, the site of secretion of the adrenocortical hormones.
cortex, cerebral,
n the outer gray matter of cerebrum, where many of the higher functions, such as volition, consciousness, conceptualization, and sensation, are carried out.

cortex

pl. cortices [L.] an outer layer, as the bark of the trunk or root of a tree, or the outer layer of an organ or other structure, as distinguished from its inner substance.

adrenal cortex
the outer, firm layer comprising the larger part of the adrenal gland; it secretes a number of hormones. See corticosteroid, aldosterone, mineralocorticoid, glucocorticoid.
cerebellar cortex
the superficial gray matter of the cerebellum.
cerebral cortex, cortex cerebri
the convoluted layer of gray matter covering each cerebral hemisphere. See also cerebral cortex.
renal cortex
the smooth-textured outer layer of the kidney, composed mainly of renal corpuscles and convoluted tubules, extending in columns between the pyramids.
References in periodicals archive ?
The other 24 volunteers were also told to try to change the activity level in their rostral anterior cingulate cortexes, but they didn't get to see what was happening there.
Percy suggests that neurophysiologists should be looking for an apex between the auditory and visual cortexes.
124) Patients whose brain lesions have destroyed certain portions of their prefrontal cortexes do perfectly well on intelligence tests, but lose most of their emotional range and as a result become so easily sidetracked when they tackle real-life tasks that they are completely dysfunctional.
The more the thumb was able to move in the new direction, the more likely their motor cortexes could be identified as more plastic.
By 2016, we might have the Olympics beamed directly to our cerebral cortexes.
In the July 19 Science, Walsh and his colleague Anjen Chenn, now at Northwestern University School of Medicine in Chicago, described genetically engineered mice that develop cerebral cortexes with greatly increased surface area, so much so that the mouse brains have a more humanlike, wrinkled appearance.
Open surgery involves the risk of complications and, in many cases, it is also impossible to surgically treat deep-seated tumors or tumors situated close to sensitive parts of the brain such as the spinal cord or the visual and auditory cortexes.
Add to this the fact that dancing, singing or chanting can drive the cortexes into producing ineffable, intensely pleasurable feelings.
His latest study showed that the rats' cortexes respond both to the simulated sense of touch created by the infrared light sensors and to whisker touch, as if the cortex is dividing itself evenly so that the brain cells process both types of information.
Recent research has shown that the adolescent brain is not fully developed and that the frontal and the prefrontal cortexes, among other areas, continue to develop into the early to midtwenties.