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Topic: Sulcus


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  MedFriendly.com: Sulcus
Sulci (the plural form of sulcus) helps form the boundaries of several irregular ridges on the brain known as convolutions, and rounded elevations on the brain known as gyri (plural of gyrus).
Compare a sulcus to a fissure, which is a deep space, groove, or slit on the surface of an organ.
Sulcus is Latin for "ditch or furrow." A furrow is a deep wrinkle.
www.medfriendly.com /sulcus.html   (195 words)

  
 IX. Neurology. 4c. The Fore-brain or Prosencephalon. Gray, Henry. 1918. Anatomy of the Human Body.
On the medial surface, it is separated from the cingulate gyrus by the cingulate sulcus; and on the inferior surface, it is bounded behind by the stem of the lateral fissure.
The anterior central gyrus (gyrus centralis anterior; ascending frontal convolution; precentral gyre) is bounded in front by the precentral sulcus, behind by the central sulcus; it extends from the supero-medial border of the hemisphere to the posterior ramus of the lateral fissure.
The medial orbital gyrus presents a well-marked antero-posterior sulcus, the olfactory sulcus, for the olfactory tract; the portion medial to this is named the straight gyrus, and is continuous with the superior frontal gyrus on the medial surface.
www.bartleby.com /107/189.html   (13328 words)

  
 V. Angiology. 4b. The Heart. Gray, Henry. 1918. Anatomy of the Human Body.   (Site not responding. Last check: 2007-10-21)
On the right it is limited by the sulcus terminalis of the right atrium, and on the left by the ligament of the left vena cava and the oblique vein of the left atrium.
Its upper part is separated from the lower by the coronary sulcus, and is formed by the atria; it presents a deep concavity (Fig.
The separation of the auricula from the sinus venarum is indicated externally by a groove, the terminal sulcus, which extends from the front of the superior vena cava to the front of the inferior vena cava, and represents the line of union of the sinus venosus of the embryo with the primitive atrium.
www.bartleby.com /107/138.html   (5354 words)

  
 Central sulcus - Wikipedia, the free encyclopedia
The central sulcus is a fold in the cerebral cortex of brains in vertebrates.
The central sulcus is a prominent landmark of the brain, separating the parietal lobe from the frontal lobe.
The central sulcus is the site of the primary motor cortex in mammals, a group of cells that controls voluntary movements of the body.
en.wikipedia.org /wiki/Central_sulcus   (107 words)

  
 Dorlands Medical Dictionary
anthe´licis transver´sus transverse sulcus of anthelix: the depression on the medial surface of the pinna corresponding to the lower crus of the anthelix.
of crus of helix a transverse sulcus on the medial surface of the pinna, corresponding to the crus helicis on the lateral surface.
ha´muli pterygoi´dei [TA] sulcus of pterygoid hamulus: a smooth groove on the lateral surface of the medial pterygoid plate of the sphenoid bone, in the angle at the base of the pterygoid hamulus; it lodges the tendon of the tensor veli palatini muscle.
www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_s_28zPzhtm   (3429 words)

  
 eMedicine - Sulcus Vocalis : Article by John Schweinfurth, MD   (Site not responding. Last check: 2007-10-21)
The term sulcus vocalis is used specifically to describe a groove or infolding of mucosa along the surface of the vocal fold.
Problem: The term sulcus vocalis is used to describe a depression or groove in the surface of vocal fold mucosa that typically is found on the leading edge of the vibratory surface.
Sulcus under stroboscopy: Note defect in the vibratory surface caused by the sulcus.
www.emedicine.com /ent/topic605.htm   (2805 words)

  
 Brodmann
Bounded approximately by the cingulate sulcus on the medial aspect of the hemisphere and by the superior postcentral sulcus on the lateral aspect.
Its approximate boundary on the medial aspect of the hemisphere is the cingulate sulcus and, on the lateral aspect, the inferior frontal sulcus.
Approximate boundaries are the cingulate sulcus dorsally and the parieto-occipital sulcus caudally.
spot.colorado.edu /~dubin/talks/brodmann/neuronames.html   (2127 words)

  
 External Surface of Cerebrum - MEDSTUDENTS - NEUROANATOMY
The cingulate sulcus begins in the septal area running parallel to the sulcus of corpus callosum, and ends in two ramus, the marginal ramus which runs to the superior margin of the cerebral hemisphere, and the subparietal sulcus which separates the cingulate gyrus from the precuneus.
Anterior to the paracentral sulcus is the medial portion of the superior frontal gyrus.
The occipitotemporal sulcus and the inferior temporal sulcus delimit the inferior temporal gyrus.
www.medstudents.com.br /basic/neuran/neuran3.htm   (2156 words)

  
 Precentral sulcus - Wikipedia, the free encyclopedia
The precentral sulcus lies parallel to, and in front of, the central sulcus.
(A sulcus is one of the prominent grooves on the surface of the brain.)
The precentral sulcus divides the inferior, middle, and superior frontal gyri from the primary motor cortex.
en.wikipedia.org /wiki/Precentral_sulcus   (69 words)

  
 Surface Curve Protocol   (Site not responding. Last check: 2007-10-21)
The marginal ramus of the cingulate sulcus defines the posterior border of the paracentral lobule, a medial region of the cerebrum that spans from the precentral to postcentral gyrus.
This sulcus divides the parietal from the occipital lobe.
The precuneus is bordered by the marginal ramus of the cingulate sulcus anteriorally and the parieto-occipital sulcus posteriorally.
www.loni.ucla.edu /~khayashi/Public/medial_surface   (2672 words)

  
 groove   (Site not responding. Last check: 2007-10-21)
formed by the deepening of the labial sulcus; its inner wall becomes incorporated with the alveolar process of the mandible or the maxilla, and its outer wall with the lips and cheeks.
for arch of aorta a broad, deep sulcus arching superiorly over the hilus on the mediastinal surface of the left lung formed as a result of the aortic arch impressing or indenting the lung.
for the descending aorta a broad, deep, vertical sulcus immediately posterior to the hilus on the mediastinal surface of the left lung, formed as a result of the descending aorta impressing or indenting the lung.
www.painhealth.com /word.asp?q=17665   (2059 words)

  
 Species Information: American plaice
Because of the depth of the sulcus on sections shown in Figures 3 and 7, the annuli are especially distinct.
The sulcus area, however, is not always the most reliable part of the otolith section for age interpretation.
Although the annuli of Figure 12 are most distinct in the sulcus area, the eleven annuli on the otolith section of Figure 13 are clearest along the dorsoproximal axis.
www.nefsc.noaa.gov /fbi/age-man/ampl/ampl.htm   (1606 words)

  
 eMedicine - Pancoast Tumor : Article by Shabir Bhimji, MD
Bronchogenic carcinomas occurring in the narrow confines of the thoracic inlet invade the lymphatics in the endothoracic fascia and include, by direct extension, the intercostal nerves, the lower roots of the brachial plexus, the stellate ganglion, the sympathetic chain, and adjacent ribs and vertebrae.
Pathophysiology: The mass in the superior sulcus is an extension of a lung tumor; most of it lies outside the lung and involves the chest wall, nerve roots, lower trunks of the brachial plexus, sympathetic chain, stellate ganglion, ribs, and bone.
The symptoms are typical of the location of the tumor in the superior sulcus or thoracic inlet adjacent to the eighth cervical nerve roots, the first and second thoracic trunk distribution, the sympathetic chain, and the stellate ganglion.
www.emedicine.com /med/topic3576.htm   (4689 words)

  
 Home - Sulcus Groove Rocks!
Sulcus Groove was formed in the fall of 2001 by a group of medical students from the Medical College of Georgia.
Sulcus Groove's sound, described as southern rock with a heavy flavor, is also evident in the bands set list of original numbers.
When not performing on stage, Sulcus Groove can be found in the studio laying down their original tracks.
www.sulcusgroove.com   (199 words)

  
 USGS Astro: Planetary Nomenclature - Ganymede Nomenclature Sulcus   (Site not responding. Last check: 2007-10-21)
Aquarius Sulcus 52.4N 3.9W 1420.0 EU GR I2762 GLOBAL 5 1979 19 SU Greek; Zeus set Ganymede among the stars as the constellation of Aquarius, the water carrier.
Dardanus Sulcus 46.9S 17.5W 2988.0 EU GR I2762 GLOBAL 5 1979 1 SU Greek; where Ganymede was abducted by Zeus disguised as an eagle.
Philae Sulcus 65.5N 169.0W 900.0 AS AB I2762 GLOBAL 5 1997 1 SU Temple that was the chief sanctuary of Isis.
planetarynames.wr.usgs.gov /jupiter/ganysulc.html   (690 words)

  
 LONI: LONI Resource | Downloads | Protocols | Masking Regions of Interest | Inferior Frontal Cortex   (Site not responding. Last check: 2007-10-21)
The IFC is defined as cortex anterior to the precentral sulcus, inferior to the inferior frontal sulcus and superior and posterior to the lateral orbital sulcus (Figure 1).
Normally the lateral orbital sulcus is continuous with the inferior frontal sulcus and serves as the anterior boundary in more inferior slices (Figure 1 and Figure 6).
Since the inferior frontal sulcus is not clearly defined in the axial slices of this region, the cortical object model must be used to distinguish this geometric line (Figure 8 and Figure 9).
www.loni.ucla.edu /NCRR/Downloads/Protocols/MaskingRegions_3.html   (621 words)

  
 Segregation of Somatosensory Activation in the Human Rolandic Cortex Using fMRI -- Moore et al. 84 (1): 558 -- Journal ...
in the cortex in the fundus of the central sulcus, are responsive
anterior to the ascending, marginal branch of the cingulate sulcus.
nonactivation in the cortex in the fundus of the central sulcus
jn.physiology.org /cgi/content/full/84/1/558   (7546 words)

  
 Structure-Function Spatial Covariance in the Human Visual Cortex -- Hasnain et al. 11 (8): 702 -- Cerebral Cortex
pole to the junction with the parieto-occipital sulcus.
the calcarine sulcus in its corresponding hemisphere, and with
counterpart, spatially covaried with the calcarine sulcus, with
cercor.oxfordjournals.org /cgi/content/full/11/8/702   (8893 words)

  
 BioMed Central | Full text | Age-dependent plasticity in the superior temporal sulcus in deaf humans: a functional MRI ...
As the middle superior temporal sulcus is known to respond selectively to human voices, our findings suggest that this subregion of the auditory-association cortex, when deprived of its proper input, might make a functional shift from human voice processing to visual processing in an age-dependent manner.
Anatomically, the anterior border of the PT is the sulcus behind Heschl's gyrus and the medial border is the point where the PT fades into the insula.
The posterior border of the PT involves the ascending and descending rami of the Sylvian fissure [10].
www.biomedcentral.com /1471-2202/5/56   (3292 words)

  
 Sulcus Hospitality Group - Privacy Statement   (Site not responding. Last check: 2007-10-21)
Sulcus Hospitality Group has created this privacy statement to demonstrate our firm commitment to privacy and confidentiality.
From time to time, Sulcus Hospitality Group may need to change its privacy statement because of changes in its business, or in its attempts to serve your needs better.
Sulcus Hospitality Group is not responsible for the privacy practices or the content of such linked websites.
www.sulcus.nl /privacy/index.htm   (159 words)

  
 Learn about Sulcus!!
The sulcus is the place where plaque accumulates, and these rounded bristles effectively carry away harmful plaque from the sulcus and all areas of the teeth and gums.
Using a multi-leveled tooth brush is ideal for cleaning the sulcus and areas between the teeth.
The reason is plaque in the sulcus attracts bacteria and causes gingivitis that bleeds when brushing or flossing.
wirelessbraces.com /sulcus.html   (282 words)

  
 Connections between Anterior Inferotemporal Cortex and Superior Temporal Sulcus Regions in the Macaque Monkey -- Saleem ...
Seltzer B, Pandya DN (1978) Afferent cortical connections and architectonics of the superior temporal sulcus and surrounding cortex in the rhesus monkey.
Seltzer B, Pandya DN (1989b) Intrinsic connections and architectonics of the superior temporal sulcus in the rhesus monkey.
Seltzer B, Pandya DN (1994) Parietal, temporal, and occipital projections to cortex of the superior temporal sulcus in the rhesus monkey: a retrograde tracer study.
www.jneurosci.org /cgi/content/full/20/13/5083   (7848 words)

  
 MR Evaluation in Patients with Isolated Anosmia Since Birth or Early Childhood -- Abolmaali et al. 23 (1): 157 -- ...
sulcus on both sides were measured in all study subjects.
Accordingly the olfactory sulcus is shorter (arrowhead) on the left where the olfactory tract is not detectable.
of an olfactory tract and depth of the olfactory sulcus in the
www.ajnr.org /cgi/content/full/23/1/157   (3618 words)

  
 Sulcal Anatomy Protocol   (Site not responding. Last check: 2007-10-21)
Sulcus frequently branches (y or t intersection) at the midline, stop at the intersection.
Should start at the most posterior branch at the medial surface (it often forms a Y-intersection with the medial surface of the hemisphere).
The sulcus should be continuous and follow all branches that extend posterior/inferior (even if it requires turning medially).
www.loni.ucla.edu /NCRR/Protocols/SulcalAnatomy_11.html   (106 words)

  
 Sulcus Hospitality Group - MainPage   (Site not responding. Last check: 2007-10-21)
Sulcus Hospitality Group and InterRes entered into an agreement to adopt the Open-Travel Allance standard protocol to the InterRes Internet Reservation System.
Sulcus Hospitality Group's products are easy to use and your operation will love using it, but those facts don't preclude the need for a comprehensive training program.
Sulcus Hospitality Group announced the introduction of a new priority service which can be reached at 0900-FOR-LDGX.
www.sulcus.nl   (175 words)

  
 SurfWax: News, Reviews and Articles On Sulcus
The bones found in the cave were accompanied by sophisticated tools and evidence of fire pits, suggesting an organized society of tiny hunters that flourished on the island for millennia at a time when modern humans dominated the planet.
The bones found in the cave were accompanied by sophisticated tools and evidence of firepits, suggesting an organized society of tiny hunters that flourished on the island for millennia at a time when modern humans dominated the planet.
Tartar encourages further bacterial growth, and bacteria eventually invade the sulcus, the crevice between the gingiva and the tooth's root.
news.surfwax.com /anatomy/files/Sulcus_anatomy.html   (647 words)

  
 Superior Sulcus Tumors: A Mini-Review -- Archie and Thomas 9 (5): 550 -- The Oncologist
Diagnosis of superior sulcus tumors: a further use of the thoracoscope.
Influence of staging in superior sulcus (Pancoast) tumors of the lung.
A multidisciplinary surgical approach to superior sulcus tumors with vertebral invasion.
theoncologist.alphamedpress.org /cgi/content/full/9/5/550   (2708 words)

  
 ipedia.com: Occipital lobe Article   (Site not responding. Last check: 2007-10-21)
The primary visual area is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and sometimes continuing onto the surface of the lobe.
The front edge of the occipital lobe is separated from the parietal lobe by the Parieto-occipital sulcus.
Above the medial, Y-shaped sulcus lies the cuneus, and the area below the sulcus is the lingual gyrus.
www.ipedia.com /occipital_lobe.html   (527 words)

  
 Virtual Hospital: The Human Brain: Chapter 5: The Cerebral Hemispheres   (Site not responding. Last check: 2007-10-21)
The so-called circular sulcus surrounds the insula, except inferomedially where the cortex of the insula is continuous, at the limen insulae, with the cerebral cortex lateral to the anterior (rostral) perforated substance on the basal aspect of the brain.
The central sulcus of the insula runs in an upwards and backwards direction, almost parallel to the cerebral central sulcus that delimits the frontal lobe from the parietal lobe.
In front of the central sulcus of the insula, a few short gyri tend to radiate from the vicinity of the limen insulae.
www.vh.org /Providers/Textbooks/BrainAnatomy/Ch5Text/Section13.html   (254 words)

  
 LONI: LONI Resource | Downloads | Protocols | Sulcal Anatomy | Central Sulcus   (Site not responding. Last check: 2007-10-21)
Notes: Always first identify the postcentral sulcus in superior axial view, as it is always the sulcus just behind the central sulcus at the superior extent.
There is often a small extra sulcus between the central and the postcentral near the Sylvian at the inferior extent of the sulcus (see case 10792, 2137, 102812).
If the superior extent of the sulcus is not continuous up to the midline, always choose the posterior extent (e.g., not anterior towards the central sulcus) using the following guidelines: move posterior when you reach the most superior bifurcation from the midline.
www.loni.ucla.edu /NCRR/Downloads/Protocols/SulcalAnatomy_3.html   (155 words)

  
 Spaceflight Now | Breaking News | Ocean believed hidden on solar system's largest moon
Arbela Sulcus is one of the smoothest lanes of bright terrain identified on Ganymede, and shows very subtle striations along its length.
Arbela Sulcus lies overall slightly lower than the dark terrain of Nicholson Regio, a 3,700 kilometers (3,300 mile) area in the southern hemisphere.
Arbela Sulcus is one of the smoothest lanes of bright terrain identified on Ganymede, but subtle striations are apparent here along its length.
spaceflightnow.com /news/n0012/17ganymedeocean   (1457 words)

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