Medical term:
peduncles
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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
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]
Farlex Partner Medical Dictionary © Farlex 2012
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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
peduncle
A stalk, often referring to a sessile GI polypMcGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
peduncle
A stalk-like bundle of fibres, especially nerve fibres that connects different parts of the central nervous system.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
peduncle
the stalk of an inflorescence or a flower.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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