corpus callosum

(redirected from Corpus collosum)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to Corpus collosum: thalamus, Anterior commissure, Corpus callosum agenesis

corpus

 [kor´pus] (pl. cor´pora) (L.)
body.
corpus al´bicans white fibrous tissue that replaces the regressing corpus luteum in the human ovary in the latter half of pregnancy, or soon after ovulation when pregnancy does not supervene.
corpus amygdaloi´deum amygdaloid body.
cor´pora amyla´cea small hyaline masses of degenerate cells found in the prostate, neuroglia, and other sites.
corpus callo´sum an arched mass of white matter in the depths of the longitudinal fissure, made up of transverse fibers connecting the cerebral hemispheres.
corpus caverno´sum either of the two columns of erectile tissue forming the body of the penis or clitoris.
corpus fimbria´tum a band of white matter bordering the lateral edge of the lower cornu of the lateral ventricle of the brain.
corpus genicula´tum see geniculate bodies, lateral, and geniculate bodies, medial.
corpus hemorrha´gicum
1. an ovarian follicle containing blood.
2. a corpus luteum containing a blood clot.
3. a blood clot formed in the cavity left by rupture of a graafian follicle.
corpus lu´teum a yellow glandular mass in the ovary formed by an ovarian follicle that has matured and discharged its ovum; see also ovulation.
corpus mammilla´re mamillary body.
cor´pora quadrige´mina four rounded eminences on the posterior surface of the mesencephalon.
corpus spongio´sum pe´nis a column of erectile tissue forming the urethral surface of the penis, in which the urethra is found.
corpus ster´ni body of sternum.
corpus stria´tum a subcortical mass of gray matter and white matter in front of and lateral to the thalamus in each cerebral hemisphere.
corpus u´teri that part of the uterus above the isthmus and below the orifices of the fallopian tubes.

cor·pus cal·lo·sum

[TA]
the great commissural plate of nerve fibers interconnecting the cortical hemispheres (with the exception of most of the temporal lobes, which are interconnected by the anterior commissure). Lying at the floor of the longitudinal fissure, and covered on each side by the cingulate gyrus, it is arched from behind forward and is thicker at each extremity (splenium [TA] and genu [TA]) but thinner in its long central portion (truncus [TA]); it curves back underneath itself at the genu to form the rostrum [TA] of the corpus callosum.

corpus callosum

(kə-lō′səm)
n. pl. corpora callosa (kə-lō′sə)
The arched bridge of nervous tissue that connects the two cerebral hemispheres, allowing communication between the right and left sides of the brain.

corpus callosum

[kôr′pəs kalō′səm]
1 a transverse band of nerve fibers joining the cerebral hemispheres. It is located at the bottom of the longitudinal fissure between the two hemispheres and is covered by the cingulate gyrus.
2 the largest commissure of the brain, connecting the cerebral hemispheres.
enlarge picture
Corpus callosum

cor·pus cal·lo·sum

(kōr'pŭs ka-lō'sŭm) [TA]
The great commissural plate of nerve fibers interconnecting the cortical hemispheres (with the exception of most of the temporal lobes, which are interconnected by the anterior commissure). Lying at the floor of the longitudinal fissure, and covered on each side by the cingulate gyrus, it is arched from behind forward and is thick at each extremity (splenium and genu) but thinner in its long central portion (truncus); it curves back underneath itself at the genu to form the rostrum of the corpus callosum.

corpus callosum

The wide curved band of nerve fibres (white matter) that connects the two cerebral hemispheres.

corpus callosum

a band of nervous tissue connecting the cerebral hemispheres in the higher mammals.

corpus callosum 

Transverse white fibres connecting the two cerebral hemispheres. See commissure; stereoblindness.

cor·pus cal·lo·sum

(kōr'pŭs ka-lō'sŭm) [TA]
The great commissural plate of nerve fibers interconnecting the cortical hemispheres.

corpus callosum (kor´pəs kəlō´səm),

n the largest commissure of the brain connecting the cerebral hemispheres.

corpus

pl. corpora [L.] body.

accessory corpus lutea
the corpora lutea which develop during early pregnancy in the mare and which follow the subsidence of the first corpus luteum.
corpus albicans, corpora albicantia
white fibrous tissue that replaces the regressing corpus luteum in the ovary in the latter half of pregnancy.
corpus amygdaloideum
a small mass of subcortical gray matter within the tip of the temporal lobe, anterior to the temporal horn of the lateral ventricle of the brain; it is part of the limbic system.
corpus amylacea
small hyaline masses of degenerate cells found in the prostate, thyroid, neuroglia and milk where they may be sufficient in a cow to block the teat sinus. They are formed by stasis of milk flow in a duct and inspissation of the fluids. Subsequently they may become detached and find their way to the teat.
corpus atreticum
scar in the ovary produced by atresia of a follicle when late in its development.
corpus callosum
an arched mass of white matter in the depths of the longitudinal fissure of the brain, and made up of transverse fibers connecting the cerebral hemispheres.
corpus callosum agenesis
all or part of the corpus may be absent and there may be additional associated defects.
corpus cavernosum clitoridis
one of the pair of erectile bodies of the clitoris.
corpus cavernosum penis
either of the two columns of erectile tissue forming the body of the penis or clitoris. See also corpus cavernosum penis.
corpus cavernosum penis rupture
common in bulls occurring during mating; commonly at the distal bend of the sigmoid flexure; result in hematoma and subsequent adhesions with inability to protrude the penis properly or angulation of the penis.
corpus cavernosum urethrae
see corpus spongiosum penis.
corpus fimbriatum
a band of white matter bordering the lateral edge of the temporal cornu of the lateral ventricle of the brain.
corpus geniculatum
see geniculate body lateral, and geniculate body medial.
corpus hemorrhagicum
1. an ovarian follicle, especially one freshly ruptured, containing blood.
2. a corpus luteum containing a blood clot.
corpus luteum
a progesterone-secreting yellow glandular mass in the ovary formed from the wall of an ovarian follicle that has matured and discharged its ovum. See also ovulation. In most animals that do not conceive the corpus luteum regresses quickly and a new follicle develops. The corpus luteum may be retained when there is uterine pathology which mimics pregnancy; no new follicle develops and the cow fails to come into heat. Called also retained corpus luteum. A similar clinical picture is observed with cystic corpora lutea.
corpus spongiosum penis
see corpus spongiosum penis.
corpus striatum
a subcortical mass of gray and white substance in front of and lateral to the thalamus in each cerebral hemisphere.
References in periodicals archive ?
After he was born, the neurologist suspected and later confirmed a diagnosis of agenesis of the corpus collosum (the absence of the formation of the two hemispheres in the brain).
Baton Rouge, Louisiana (October 1997), has a three-year-old son who has hydrocephalus, agenesis of the corpus collosum (absence of the two transverse fibers connecting the two cerebral hemispheres), frontal nasal dysplasia (smaller than normal nasal passages, affecting the size and placement of the facial features), syndactylism on one hand and one foot, bilateral shunts, and has developed "bowel dumping" syndrome after his fundoplication.