central sulcus (redirected from Rolandic fissure)

central sulcus

n.

See fissure of Rolando.

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central sulcus

Etymology: Gk, kentron + L, furrow

a cleft separating the frontal from the parietal lobes of the brain. Also called central fissure, fissure of Rolando.

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central

pertaining to a center; located at the midpoint.

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central artery

of the optic nerve, the source of the retinal artery. See also Table 9.

central channel

the fast-flowing channel through the capillary bed, the rate controlled by the metarterioles which exert a sphincter-like action on the system.

central convulsions

convulsions arising from stimulation of the central nervous system, as distinct from those caused by lesions elsewhere.

central cord syndrome

injury to the central portion of the cervical spinal cord resulting in disproportionately more weakness or paralysis in the forelimbs than in the hindlimbs; pathological change is caused by hemorrhage or edema.

central diabetes insipidus

see diabetes insipidus.

central European tick-borne encephalitis

see encephalitis.

central layer

central of the three layers of gray matter in the cerebellum; the principal cell type is piriform.

central nervous system

see central nervous system.

central peripheral neuropathy

see Boxer progressive axonopathy.

central progressive retinal atrophy

see central progressive retinal atrophy.

central projection law

the laws of physics applied to the primary x-ray beam of photons, e.g. the closer the object being x-rayed is to the film the sharper will be its definition.

central respiratory oscillator

pool of nerve cells in the pons and medulla oblongata which are responsible for the rhythmic to-and-fro movements of respiration.

central retinal degeneration

see retinal.

central sulcus

fissure of Rolando.

central tarsal bone

the bone of the hock which lies between the proximal and distal rows of tarsal bones.

central tendon of diaphragm

see diaphragmatic tendon.

central vein

the centrally placed drainage vessel of each hepatic lobule, receiving blood from the hepatic sinusoids.

central venous catheterization

insertion of an indwelling catheter into a central vein for the purpose of administering fluid and medications and for the measurement of central venous pressure (see below).

central venous pressure (CVP)

the pressure of blood in the right atrium, measured by an in situ catheter in the right atrium, is a much better guide of the degree of vasogenic peripheral failure than is arterial blood pressure. The technique is used mainly in dogs and cats.

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sulcus

pl. sulci [L.] a groove or furrow; a linear depression, especially one separating the gyri of the brain.

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abomasal sulcus

the third or abomasal part of the gastric groove.

alar sulcus

lies between the dorsolateral cartilage at the nostril and the lateral accessory cartilage.

calcarine sulcus

see calcarine sulcus.

central sulcus

fissure of Rolando.

collateral sulcus

see collateral fissure.

coronal sulcus

a groove at the top of the hoof wall that houses the coronal matrix.

coronary sulcus

an external groove which indicates the division of the ventricles of the heart and the atria. Houses the circumflex coronary blood vessels of the heart.

cruciate sulcus

a deep groove which runs transversely across the rostro-dorsal surface of the cerebrum and which is one of the landmarks on the cerebral cortex.

sulcus cutis

fine depressions of the skin between the ridges of the skin.

dorsal median sulcus

see dorsal median fissure.

gingival sulcus

the groove between the surface of the tooth and the epithelium lining the free gingiva.

hippocampal sulcus

hippocampal fissure.

jugular sulcus

see jugular furrow.

lateral cerebral sulcus

see sylvian fissure.

sulcus limitans

a longitudinal groove in the neural tube wall of the embryo; stretches from the mesencephalon caudad.

omasal sulcus

the second part of the gastric groove in ruminants.

reticular sulcus

the first part of the gastric groove in ruminants.

rhinal sulcus

a deep groove which separates the neopallium from the paleopallium on the lateral surface of the brain.

rumenoreticular sulcus

a groove on the external surface of the forestomachs that marks the division between the rumen and reticulum.

scleral sulcus

the groove between the sclera and cornea.

sylvian sulcus

a landmark groove on the lateral side of the cerebral cortex.

urethral sulcus

the furrow in the ventral aspect of the corpus cavernosum of the penis that accommodates the corpus cavernosum urethrae and the urethra.