Crossword clues for sulcus
The Collaborative International Dictionary
Sulcus \Sul"cus\, n.; pl. Sulci. [L., a furrow.] A furrow; a groove; a fissure.
Douglas Harper's Etymology Dictionary
plural sulci, "fissure between convolutions of the brain," 1833, from medical use of Latin sulcus "furrow, trench, ditch, wrinkle," apparently literally "the result of plowing," from PIE *selk- "to pull, draw" (cognates: Greek holkos "furrow," Old English sulh "plow," Lithuanian velku "I draw").
Wiktionary
n. 1 (context anatomy English) a furrow or groove in an organ or a tissue 2 (context anatomy English) any of the grooves that mark the convolutions of the surface of the brain 3 (context planetology English) subparallel grooves and ditches formed by geological processes
WordNet
n. (anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the brain
[also: sulci (pl)]
Wikipedia
Sulcus (plural sulci) may refer to:
- Sulcus (morphology), a groove, crevice or furrow in medicine, botany, and zoology
- Sulcus (neuroanatomy), a crevice on the surface of the brain
- Sulcus (geology), a long parallel groove on a planet or a moon
The term sulcus (pl. sulci) is a general descriptive term for a furrow or fissure. It is used in many disciplines, such as geology, but in morphological and anatomical connections it usually refers to a groove as a feature in the surface of a limb or an organ, notably in the surface of the brain, but also in the lungs, certain muscles (including the heart), as well as in many bones, and various other major morphological features, both internal and external. Many sulci are the product of a surface fold or junction, such as in the gums, where they fold around the neck of the tooth.
The term sulcus is used in invertebrate zoology to describe folds, grooves, and boundaries, especially at the edges of sclerites or between segments.
In botany and palynology, the surface morphology of seeds and pollen grains is termed sulcate if one or more sulci form major features. In the case of pollen, these sulci, called colpi (sing: colpus), are the apertures through which the pollen tube germinates. Smaller furrows may be described by other terms such as rugose, rugulose, plicate, striate, etc.
In neuroanatomy, a sulcus ( Latin: "furrow", pl. sulci) is a depression or groove in the cerebral cortex. It surrounds a gyrus (pl. gyri), creating the characteristic folded appearance of the brain in humans and other mammals.
Sulcus (plural : sulci) is, in astrogeology, a long parallel groove on a planet or a moon.
For example, Uruk Sulcus is a bright region of grooved terrain adjacent to Galileo Regio on Jupiter's moon Ganymede.
Usage examples of "sulcus".
There was some combination of water, water-soluble minerals, and temperature that triggered the cysts, and the combination had existed in Cyane Sulci, but no attempt to duplicate those conditions in a lab worked.
Cyane Sulci, damaging the labs where my husband had worked to make the mother cysts bloom, I flew in the last Presidential shuttle, on my last official tour of a disaster area.
The sulci and gyri are fairly standardized from brain to brain, and the more prominent ones are named and mapped.
It is the most prominent of all the sulci, and is sometimes called the fissure of Sylvius, after the professional pseudonym of a i/th-century French anatomist who first described it.
The portion of the cerebral hemisphere lying to the front of the central sulcus and before the point at which the lateral sulcus begins is the frontal lobe.
A lung fluke did the same for the chest and upper body cavity, a third genemod parasite inhabited one of the larger sulci of the brain and warded off tumor growth, Parkinson's, and Alzheimer's.
Behind the central sulcus and above the lateral sulcus is the parietal lobe (puh-ry'ih-tal).
In the Lycus and Cyane Sulci, spread across a broad band north of the old shield volcano Olympus Mons, canyons twist and shove across a thousand kilometers like the imprint of a nest of huge and restless worms.
During one memorable day away from my duties, he showed me a broad canyon in Cyane Sulci chosen for a major mother cyst experiment.
Melas Doras had none of the drama of the sulci, none of the color of Sinai, no fossils, no minerals .
The Cyane Sulci team had finished a larger test dome for the first big experiment with the intact mother cysts.
I picked up my slate and searched for a good picture and yes, there he was, smiling over a mother cyst at Cyane Sulci, and here on the day of our ceremony, uncomfortable in a formal suit.
The water boiled from the northern rapes, some of it coursing into the sulci, flooding the hundreds of kilometers in between to a depth of several meters.
My mother had just become President of Mars, under the New Republic Constitution, and she, my father, and I were making the pilgrimage across Cyane Sulci to Casseia's home, as had become traditional in the past few administrations.
She smiled, shook our hands, and invited us into her house, perched on the edge of the Cyane Sulci Preserve, where we removed our suits and showered and became comfortable.