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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

frontal crest
A ridge arising at the termination of the sagittal sulcus on the cerebral surface of the frontal bone and ending at the foramen caecum. ... Synonym: crista frontalis. ... (05 Mar 2000) ...

frontal eminence
The most prominent portion of the frontal bone on either side. ... Synonym: tuber frontale, eminentia frontalis, frontal tuber. ... (05 Mar 2000) ...

frontal fontanel
Synonym for anterior fontanel ... A diamond-shaped membranous interval at the junction of the coronal, sagittal, and metopic sutures where the frontal angles of the parietal bones meet the two ununited halves of the frontal bone. ... Synonym: fonticulus anterior, bregmatic fontanel, frontal fontanel. ... (05 Mar 2000) ...

frontal foramen
An occasional small opening in the supraorbital margin of the frontal bone medial to the supraorbital foramen. ... Synonym: foramen frontale. ... (05 Mar 2000) ...

frontal grooves
See: inferior frontal sulcus, middle frontal sulcus, superior frontal sulcus. ... (05 Mar 2000) ...

frontal horn
See: inferior horn of lateral ventricle, inferior horn. ... (05 Mar 2000) ...

frontal lobe
The frontal lobes are responsible for higher cognitive thought processes. ... (27 Sep 1997) ...

frontal lobe epilepsy
A localization-related epilepsy with seizures originating in the frontal lobe. A variety of clinical syndromes exist depending on the exact localization of seizures and clinical semiology of the seizure type. Frontal lobe epilepsies have been divided into several specific syndromes including the syndrome of supplementary motor seizures, cingulate s …

frontal lobe of cerebrum
The portion of each cerebral hemisphere anterior to the central sulcus. ... Synonym: lobus frontalis cerebri, frontal lobe. ... (05 Mar 2000) ...

frontal margin
Synonym for frontal border ... Edge of a bone which articulates with the frontal bone. ... See: frontal border of parietal bone, frontal border of sphenoid bone. ... Synonym: margo frontalis, frontal margin. ... (05 Mar 2000) ...

frontal nerve
<anatomy, nerve> A branch of the ophthalmic nerve which divides within the orbit into the supratrochlear and the supraorbital nerves. ... Synonym: nervus frontalis. ... (05 Mar 2000) ...

frontal notch
A small notch, sometimes a foramen, on the orbital margin of the frontal bone medial to the supraorbital notch. ... Synonym: incisura frontalis. ... (05 Mar 2000) ...

frontal part of corpus callosum
Synonym for minor forceps ... Frontal radiation of the corpus callosum; that part of the fibre radiation of the corpus callosum which bends forward toward the frontal pole of the cerebrum. ... Synonym: forceps minor, forceps anterior, frontal part of corpus callosum, pars frontalis corporis callosi. ... (05 Mar 2000) ...

frontal plane
Synonym for coronal plane ... A vertical plane at right angles to a sagittal plane, dividing the body into anterior and posterior portions. ... Synonym: frontal plane. ... (05 Mar 2000) ...

frontal plate
In the foetus, a cartilage plate between the lateral parts of ethmoid cartilage and the developing sphenoid bone. ... (05 Mar 2000) ...

frontal pole
Synonym for frontal pole of cerebrum ... The most anterior promontory of each cerebral hemisphere. ... Synonym: polus frontalis cerebri, frontal pole. ... (05 Mar 2000) ...

frontal pole of cerebrum
The most anterior promontory of each cerebral hemisphere. ... Synonym: polus frontalis cerebri, frontal pole. ... (05 Mar 2000) ...

frontal process of maxilla
The upward extension from the body of the maxilla, which articulates with the frontal bone. ... Synonym: nasal process, processus frontalis maxillae. ... (05 Mar 2000) ...

frontal process of zygomatic bone
The process of the zygomatic bone which extends upward to form the lateral margin of the orbit and articulates with the frontal bone and greater wing of the sphenoid bone. ... Synonym: frontosphenoidal process, processus frontalis ossis zygomatici. ... (05 Mar 2000) ...

frontal region of head
The surface region of the head corresponding to the outlines of the frontal bone. ... Synonym: regio frontalis capitis. ... (05 Mar 2000) ...

frontal section
Synonym for coronal section ... A cross section attained by slicing, actually or through imaging techniques, the body or any part of the body or any anatomic structure in the coronal or frontal plane, i.e., in a vertical plane perpendicular to the median or sagittal plane. Since actual sectioning in the coronal plane results in an anterior and a pos …

frontal sinus
One of the paired, but seldom symmetrical, air spaces located between the inner and outer compact layers of the frontal bone. ... (12 Dec 1998) ...

frontal sinus aperture
One of a pair of openings in the floor of the frontal sinuses in the nasal part of the frontal bone, through which the frontal sinuses communicate with the ethmoidal infundibulum via the frontonasal duct. ... Synonym: apertura sinus frontalis. ... (05 Mar 2000) ...

frontal sinusitis
Inflammation of the frontal sinus; in most cases the infection is caused by the bacteria streptococcus pneumoniae and haemophilus influenzae. This condition may be acute or chronic. ... (12 Dec 1998) ...

frontal squama
Synonym for squamous part of occipital bone ... The tabular or squamous portion of occipital bone. ... Synonym: squama occipitalis, occipital squama, frontal squama. ... (05 Mar 2000) ...

frontal suture
The suture between the two halves of the frontal bone, usually obliterated by about the sixth year; if persistent it is called a metropic suture. ... Synonym: sutura frontalis. ... (05 Mar 2000) ...

frontal triangle
A triangle bounded above by the maximum frontal diameter and laterally by lines joining the extremities of this diameter with the glabella. ... (05 Mar 2000) ...

frontal tuber
Synonym for frontal eminence ... The most prominent portion of the frontal bone on either side. ... Synonym: tuber frontale, eminentia frontalis, frontal tuber. ... (05 Mar 2000) ...

frontal veins
The superficial veins draining the frontal cortex and emptying into the superior sagittal sinus. ... Synonym: supratrochlear veins. ... (05 Mar 2000) ...

frontal zone contraction theory
Model proposed to account for the movement of giant amoebae in which cytoplasmic contraction at the front of the leading pseudopod (fountain zone) pulls viscoelastic cytoplasm forward in the centre of the cell and forms a tube of more rigid cytoplasm immediately below the plasma membrane behind the active region. The peripheral contracted cytoplasm …

frontalis
Synonym: frontal. ... Origin: L. ... (05 Mar 2000) ...

frontalis muscle
Synonym for frontal belly of occipitofrontalis muscle ... <anatomy> The anterior belly of the occipitofrontalis muscle. ... See: occipitofrontalis muscle. ... Synonym: venter frontalis musculi occipitofrontalis, frontalis muscle. ... (05 Mar 2000) ...

frontlet
1. A frontal or brow band; a fillet or band worn on the forehead. 'They shall be as frontlets between thine eyes.' (Deut. Vi. 8) ... 2. A frown (likened to a frontlet). 'What makes that frontlet on? Methinks you are too much of late i' the frown.' (Shak) ... 3. <ornithology> The margin of the head, behind the bill of birds, often bearing rigid …

fronto-
<anatomy, prefix> A combining form signifying relating to the forehead or the frontal bone; as, fronto-parietal, relating to the frontal and the parietal bones; fronto-nasal, etc. ... Origin: L. Frons, frontis, the forehead. ... (29 Oct 1998) ...

fronto-occipital
Relating to the frontal and the occipital bones, or to the forehead and the occiput. ... (05 Mar 2000) ...

fronto-occipital fasciculus
Synonym for occipitofrontal fasciculus ... A bundle of association fibres extending from the frontal to the occipital lobes of the cerebrum. ... Synonym: fasciculus occipitofrontalis, fronto-occipital fasciculus. ... (05 Mar 2000) ...

fronto-orbital area
Synonym for orbitofrontal cortex ... The cerebral cortex covering the basal surface of the frontal lobes. ... Synonym: fronto-orbital area. ... (05 Mar 2000) ...

frontoanterior position
A cephalic presentation of the foetus with its forehead directed toward the right (right frontoanterior, RFA) or to the left (left frontoanterior, LFA) of the acetabulum of the mother. ... (05 Mar 2000) ...

frontoethmoidal suture
Line of union between the cribriform plate of the ethmoid and the orbital plate and posterior margin of the nasal process of the frontal bone. ... Synonym: sutura frontoethmoidalis. ... (05 Mar 2000) ...

frontolacrimal suture
Line of union between the upper margin of the lacrimal and the orbital plate of the frontal bone. ... Synonym: sutura frontolacrimalis. ... (05 Mar 2000) ...

frontomalar
Synonym for frontozygomatic ... Relating to the frontal and zygomatic bones. ... Synonym: frontomalar. ... (05 Mar 2000) ...

frontomaxillary
Relating to the frontal and the maxillary bones. ... (05 Mar 2000) ...

frontomaxillary suture
Articulation of the frontal process of the maxilla with the frontal bone. ... Synonym: sutura frontomaxillaris. ... (05 Mar 2000) ...

frontonasal
Relating to the frontal and the nasal bones. ... (05 Mar 2000) ...

frontonasal duct
The passage that leads downward from the frontal sinus to open into the ethmoidal infundibulum. ... (05 Mar 2000) ...

frontonasal primordium
Synonym for frontonasal prominence ... The unpaired embryonic prominence between the medial nasal elevations, which eventually merges with them to contribute to the bridge of the nose and the underlying nasal septum. ... Synonym: forebrain eminence, forebrain prominence, frontonasal primordium, frontonasal process. ... (05 Mar 2000) ...

frontonasal process
Synonym for frontonasal prominence ... The unpaired embryonic prominence between the medial nasal elevations, which eventually merges with them to contribute to the bridge of the nose and the underlying nasal septum. ... Synonym: forebrain eminence, forebrain prominence, frontonasal primordium, frontonasal process. ... (05 Mar 2000) ...

frontonasal prominence
The unpaired embryonic prominence between the medial nasal elevations, which eventually merges with them to contribute to the bridge of the nose and the underlying nasal septum. ... Synonym: forebrain eminence, forebrain prominence, frontonasal primordium, frontonasal process. ... (05 Mar 2000) ...

frontonasal suture
Line of union of the frontal and of the two nasal bones. ... Synonym: sutura frontonasalis, sutura nasofrontalis. ... (05 Mar 2000) ...

frontoparietal
Relating to the frontal and the parietal bones. ... (05 Mar 2000) ...

frontopontine tract
A large group of fibres arising from the frontal lobe of the cerebral hemisphere, especially the precentral gyrus, descending in the capsula interna, farther caudally composing the medial part of the crus cerebri in which they extend caudalward to end in the gray matter (pontine nuclei) of the ventral part of the pons. ... Synonym: tractus frontopon …

frontoposterior position
A cephalic presentation of the foetus with its forehead directed toward the right (right frontoposterior, RFP) or to the left (left frontoposterior, LFP) sacroiliac articulation of the mother. ... (05 Mar 2000) ...

frontosphenoidal process
Synonym for frontal process of zygomatic bone ... The process of the zygomatic bone which extends upward to form the lateral margin of the orbit and articulates with the frontal bone and greater wing of the sphenoid bone. ... Synonym: frontosphenoidal process, processus frontalis ossis zygomatici. ... (05 Mar 2000) ...

frontotemporal
Relating to the frontal and the temporal bones. ... (05 Mar 2000) ...

frontotemporal tract
Synonym for unciform fasciculus ... A band of long association fibres reciprocally connecting the frontal and temporal lobes of the cerebrum, running caudally through the white matter of the frontal lobe, sharply curving ventrally under the stem of the sylvian fissure, and then fanning out to the cortex of the anterior half of the superior and middl …

frontotemporale
A craniometric point located at the most anterior point of the temporal line on the frontal bone. ... (05 Mar 2000) ...

frontotransverse position
A cephalic presentation of the foetus with its forehead directed toward the right (right frontotransverse, RFT) or to the left (left frontotransverse, LFT) iliac fossa of the mother. ... (05 Mar 2000) ...

frontozygomatic
Relating to the frontal and zygomatic bones. ... Synonym: frontomalar. ... (05 Mar 2000) ...

frontozygomatic suture
Line of union between the zygomatic process of the frontal and the frontal process of the zygomatic bone. ... Synonym: sutura frontozygomatica, sutura zygomaticofrontalis. ... (05 Mar 2000) ...

Froriep
August von, German anatomist, 1849-1917. ... See: Froriep's ganglion, Froriep's induration. ... (05 Mar 2000) ...

Froriep's ganglion
A temporary collection of nerve cells on the dorsal aspect of the hypoglossal nerve in the embryo; it represents a rudimentary sensory ganglion. ... (05 Mar 2000) ...

Froriep's induration
Synonym for myositis fibrosa ... Induration of a muscle through an interstitial growth of fibrous tissue. ... Synonym: Froriep's induration, interstitial myositis, myofascitis. ... (05 Mar 2000) ...

frost
1. To injure by frost; to freeze, as plants. ... 2. To cover with hoarfrost; to produce a surface resembling frost upon, as upon cake, metals, or glass. 'While with a hoary light she frosts the ground.' (Wordsworth) ... 3. To roughen or sharpen, as the nail heads or calks of horseshoes, so as to fit them for frosty weather. ... Origin: Frostted; Frost …

frost itch
Synonym for dermatitis hiemalis ... A recurrent eczema appearing with the advent of cold weather. ... Synonym: frost itch, lumberman's itch, pruritus hiemalis, winter itch. ... (05 Mar 2000) ...

Frost suture
Intermarginal suture between the eyelids to protect the cornea. ... (05 Mar 2000) ...

Frost, Albert
<person> U.S. Ophthalmologist, 1889-1945. ... See: Frost suture. ... (05 Mar 2000) ...

frostberg inverted-three sign
<radiology> Medial retraction of 2nd portion of duodenum, pancreatic carcinoma (less than10% of carcinoma's), acute pancreatitis, postbulbar ulcer disease ... (12 Dec 1998) ...

frostbite
A cold injury that is accompanied by pallor, numbness and a loss of cold sensation. ... (27 Sep 1997) ...

frosted heart
Hyaloserositis involving the pericardium. ... Synonym: icing heart. ... (05 Mar 2000) ...

frosted liver
Hyaloserositis of the liver. ... Synonym: Curschmann's disease, icing liver, sugar-icing liver, zuckergussleber. ... (05 Mar 2000) ...

frostnip
A cold injury that is accompanied by pallor to the affected area. ... (27 Sep 1997) ...

frostweed
<botany> An American species of rockrose (Helianthemum Canadense), sometimes used in medicine as an astringent or aromatic tonic. ... It has large yellow flowers which are often sterile, and later it has abundant but inconspicuous flowers which bear seed. It is so called because, late in autumn, crystals of ice shoot from the cracked bark at t …

froth
1. The bubbles caused in fluids or liquors by fermentation or agitation; spume; foam; especially, a spume of saliva caused by disease or nervous excitement. ... 2. Any empty, senseless show of wit or eloquence; rhetoric without thought. 'It was a long speech, but all froth.' (L'Estrange) ... 3. Light, unsubstantial matter. ... <zoology> Froth in …

frottage
1. The rubbing movement in massage. ... 2. Production of sexual excitement by rubbing against someone. ... Origin: F. A rubbing ... (05 Mar 2000) ...

frotteur
One who gets sexual excitement through frottage. ... (05 Mar 2000) ...

frozen pelvis
A condition in which the true pelvis is indurated throughout, especially by carcinoma. ... Synonym: hardened pelvis. ... (05 Mar 2000) ...

frozen section
<technique> Part of biopsy material frozen immediately to enable pathological analysis in a few minutes on a microscope slide. ... (16 Dec 1997) ...

frozen sections
Thinly cut sections of frozen tissue specimens prepared with a cryostat or freezing microtome. ... (12 Dec 1998) ...

frozen shoulder
<orthopaedics, rheumatology> This disorder results from any conditions that enforce prolonged immobility of the shoulder joint. The shoulder is painful and tender to palpation. ... There is marked restriction of passive and active range of motion. Physical therapy and corticosteroid injections may be helpful in some cases. Surgery will be requ …

frozen stock
<cell culture> Because cell lines tend to change their properties with continuous rounds of subculturing, it is common practice to keep stocks of cells frozen (either in liquid nitrogen or at 70_C) and to keep returning to this stock so that experiments are all carried out on cells of comparable passage number. ... The method also allows strai …

frozen-in flow law
<radiobiology> In a perfect conductor, the total magnetic flux through any surface is a constant. In a plasma which is nearly perfectly conducting, the relevant surfaces move with the plasma, the result is that the plasma is tied to the magnetic field, and the field is tied to the plasma. Motion of the plasma thus deforms the magnetic field, …

FRS
<abbreviation> Fellow of the Royal Society. ... (05 Mar 2000) ...

FRSC
<abbreviation> Fellow of the Royal Society (Canada). ... (05 Mar 2000) ...

Fru
Symbol for fructose. ... (05 Mar 2000) ...

frubiase
<chemical> Combination of calcium gluconate, calcium lactate, ergocalciferol, phosphoric acid and ascorbic acid; used in treatment of erythema and urticaria ... Chemical name: d-gluconic acid, calcium salt (2:1), mixt. With l-ascorbic acid, 2-hydroxypropanoic acid calcium salt (2:1), phosphoric acid and (3beta,5z,7e,22e)-9,10-secoergosta-5,7,1 …

fructans
Polysaccharides composed of d-fructose units. ... (12 Dec 1998) ...

fructification
1. The act of forming or producing fruit; the act of fructifying, or rendering productive of fruit; fecundation. 'The prevalent fructification of plants.' (Sir T. Brown) ... 2. <botany> The collective organs by which a plant produces its fruit, or seeds, or reproductive spores. The process of producing fruit, or seeds, or spores. ... Origin: L. …

fructo-
Chemical prefix denoting the fructose configuration. ... Origin: L. Fructus, fruit ... (05 Mar 2000) ...

fructofuranose
Fructose in furanose form. ... (05 Mar 2000) ...

fructokinase
<enzyme> Catalyses d-fructose to yield d-fructose 6-phosphate and ADP in the presence of ATP ... Registry number: EC 2.7.1.4 ... Synonym: fructokinase 1, scrk protein ... (26 Jun 1999) ...

fructokinases
<enzyme> A class of enzymes that catalyses the phosphorylation of fructose in the presence of ATP. ... Registry number: EC 2.7.1.- ... (12 Dec 1998) ...

fructolysis
The conversion of fructose to lactate; analogous to glycolysis. ... (05 Mar 2000) ...

fructosaemia
Presence of fructose in the circulating blood. ... See: hereditary fructose intolerance. ... Synonym: levulosaemia. ... (05 Mar 2000) ...

fructosamine
An amino sugar formed by the reduction of the osazone of glucosamine. ... (12 Dec 1998) ...

fructosan
A polysaccharide of fructose (e.g., inulin) containing small amounts of other sugars; present in certain tubers. ... Synonym: levan, levulan, levulin, levulosan, polyfructose. ... (05 Mar 2000) ...

fructose
<biochemistry> A 6 carbon sugar (hexose) abundant in plants. Fructose has its reducing group (carbonyl) at C2 and thus is a ketose, in contrast to glucose that has its carbonyl at C1 and thus an aldose. Sucrose, common table sugar, is the nonreducing disaccharide formed by an alpha linkage from C1 of glucose to C2 of fructose (latter in furan …

fructose 1-phosphate
A fructose derivative that accumulates in individuals with hereditary fructose intolerance. ... (05 Mar 2000) ...

fructose 1,6-bisphosphate
<biochemistry> This key intermediate in glycolysis and gluconeogenesis (a hexose diphosphate) was discovered by Arthur Harden and William Young in 1905. ... In the third step of glycolysis, fructose 6-phosphate and ATP are converted to fructose 1,6-bisphosphate and ADP with the aid of phosphofructokinase. In step 4, fructose 1,6 bisphosphate ( …

fructose 2,6-bisphosphate
An analog of fructose 1,6-bisphosphate that plays a key role in the regulation of glycolysis and gluconeogenesis; activates phosphofructokinase and inhibits fructose 1,6-bisphosphatase. ... (05 Mar 2000) ...

fructose 6-phosphate
<biochemistry> A phosphorylated six-carbon sugar formed in the second step of glycolysis by the action of phosphoglucose isomerase on glucose-6-phosphate. In the third step, fructose 6-phospate and ATP are used to create fructose 1,6-biphosphate, ADP and a free hydrogen with the aid of phosphofructokinase. ... (08 Mar 2000) ...