peduncle


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peduncle

 [pe-dung´k'l]
1. a stemlike connecting part.
2. a collection of nerve fibers connecting between different regions in the central nervous system.
3. the stalk by which a nonsessile tumor is attached to normal tissue. adj., adj pedun´cular.
cerebellar p's three sets of paired bundles (superior, middle, and inferior) connecting the cerebellum to the midbrain, pons, and medulla oblongata, respectively.
cerebral peduncle the anterior half of the midbrain, divisible into a posterior part (tegmentum) and an anterior part (crus cerebri), which are separated by the substantia nigra.
inferior cerebellar peduncle a large bundle of nerve fibers serving to connect the medulla oblongata and spinal cord with the cerebellum (especially the archicerebellum and paleocerebellum); it courses along the lateral border of the fourth ventricle and turns dorsally into the cerebellum. Formerly called caudal cerebellar peduncle.
middle cerebellar peduncle a large bundle of projection fibers originating in the contralateral pontine nuclei and entering the cerebellum, conveying impulses from the cerebral cortex to the neocerebellum.
pineal peduncle habenula (def. 2).
superior cerebellar peduncle a large bundle of projection fibers arising chiefly in the dentate nucleus of each cerebellar hemisphere (neocerebellum) and ascending to decussate in the mesencephalon; its fibers end mostly in the red nucleus and thalamus. Spinocerebellar fibers to the paleocerebellum lie adjacent to each peduncle. Formerly called rostral cerebellar peduncle.
p's of thalamus the four two-way radiations of thalamocortical fibers that connect the dorsal thalamus with many parts of the cerebral cortex, which together form a major portion of the internal capsule and the corona radiata.

pe·dun·cle

(pe-dŭng'kĕl, pē'dŭng-kĕl),
1. neuroanatomy term loosely applied to a variety of stalklike connecting structures in the brain, composed either exclusively of white matter (for example, cerebellar peduncle) or of white and gray matter (for example, cerebral peduncle).
2. Synonym(s): pedicle (2)
[Mod. L. pedunculus, dim. of pes, foot]

peduncle

(pĭ-dŭng′kəl, pē′dŭng′kəl)
n.
1. Botany The stalk of an inflorescence or a stalk bearing a solitary flower in a one-flowered inflorescence.
2. Zoology A stalklike structure in invertebrate animals, usually serving as an attachment for a larger part or structure.
3. Anatomy A stalklike bundle of nerve fibers connecting different parts of the brain.
4. Medicine The stalklike base to which a polyp or tumor is attached.

pe·dun′cu·lar (pĭ-dŭng′kyə-lər) adj.

peduncle

A stalk, often referring to a sessile GI polyp

pe·dun·cle

(pĕ-dŭngk'ĕl)
1. neuroanatomy Term loosely applied to various stalklike connecting structures in the brain, composed either exclusively of white matter (e.g., cerebellar peduncle) or of white and gray matter (e.g., cerebral peduncle).
2. Synonym(s): pedicle (2) .
[Mod. L. pedunculus, dim. of pes, foot]

peduncle

A stalk-like bundle of fibres, especially nerve fibres that connects different parts of the central nervous system.

peduncle

the stalk of an inflorescence or a flower.
References in periodicals archive ?
fistulosa differs by its ebracteolate, thick peduncle with a proximal and a distal abscission zone, and its obconic to ellipsoid, white berries, versus the bracteolate, slender peduncle that lacks abscission zones, and the globose, pink berries in B.
Progression of pathological changes in the middle cerebellar peduncle by diffusion tensor imaging correlates with lesser motor gains after pontine infarction.
Study Author Age Location (1) Cervoni 71 R cerebellar hemisphere (2) Cervoni 67 L cerebellar hemisphere (3) Jaiswal 65 Vermis (4) Huppmann 65 R cerebellar hemisphere (5) Yong 71 4th ventricle (6) Kepes 73 R cerebellar hemisphere (7) Ramsay 66 Cerebellar hemisphere (8) Ramsay 65 Cerebellar hemisphere (9) Liang 72 R cerebellar hemisphere (10) Sajko 62 R superior cerebellar peduncle (11) Aljoghaiman 51 R middle cerebellar peduncle + (current case) superior vermis Study Pathology (1) Not specified (2) Not specified (3) Medulloblastoma with glial differentiation (4) Classic subtype (5) Classic subtype (6) Classic subtype (7) Classic subtype (8) Desmoplastic subtype (9) Classic subtype (10) Desmoplastic subtype (11) Classic subtype (SHH subgroup)
The minimum and maximum sizes of the peduncle and capitulum of these octolasmids are given in Table I.
Maximum peduncle length was observed in GA-2002 with mean value 48.122 cm while minimum peduncle length was observed in 9750 advance line that was 36.544 cm (table 1).
[1,2] JS is an autosomal recessive neurodevelopmental disorder, characterized by molar tooth malformation, a complex brainstem malformation that reflects aplasia and marked hypoplasia of cerebellar vermis, thickened and elongated superior cerebellar peduncles, and deepened interpeduncular fossa that is apparent on axial magnetic resonance imaging (MRI) at the midbrain-hindbrain junction.
Previously, a case of bilateral cerebral peduncular infarction involving most of the lateral portion of the peduncle with a sign termed "Mickey Mouse ears" on DWI has been reported [5].
For each species of interest we took the following morphological measurements: standard length (SL), maximum body width (MBW), maximum body depth (MBD), mean body height (MHB), maximum length of pectoral fin (MLF), caudal peduncle height (CPH), peduncle width (PW), head height (ITH), maximum width of fin (MW) and eye height (EH) (Figure 2).
Primary data were recorded on days to heading (DTH), days to maturity (DTM), plant height (PH), stem length (SL), peduncle length (PL), peduncle extrusion (PE), spike length (SpL), flag leaf auricle height (FLAH), flag leaf node height (FLNH), flag leaf sheath length (FLSL), flag leaf blade length (FLBL), flag leaf blade width (FLBW), productive tillers (PT), non-productive tillers (NPT), percent lodging (L), spike weight (SpW), grain yield per spike (GYPSp), grains per spike (GPSp), tiller vegetative mass (TVM), 1000 kernel weight (TKW), grain yield (GY) and biological yield (BY).
The main goal of this innovator study was to evaluate if the gum extraction influences the production of nut and peduncle of precocious dwarf cashew tree grown under different water regimes and mineral nutrition.