pallium


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pallium

 [pal´e-um]
2. the cerebral cortex during its development.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ce·re·bral cor·tex

[TA]
the gray cellular mantle (1-4 mm thick) covering the entire surface of the cerebral hemisphere of mammals; characterized by a laminar organization of cellular and fibrous components such that its nerve cells are stacked in defined layers varying in number from one, as in the archicortex of the hippocampus, to five or six in the larger neocortex; the outermost (molecular or plexiform) layer contains very few cell bodies and is composed largely of the distal ramifications of the long apical dendrites issued perpendicularly to the surface by pyramidal and fusiform cells in deeper layers. From the surface inward, the layers as classified in K. Brodmann's parcellation are: 1) molecular layer [TA]; 2) external granular layer [TA]; 3) external pyramidal layer [TA]; 4) internal granular layer [TA]; 5) internal pyramidal layer [TA]; and 6) multiform layer [TA], many of which are fusiform. This multilaminate organization is typical of the neocortex (homotypic cortex; isocortex [TA] in O. Vogt terminology), which in humans covers the largest part by far of the cerebral hemisphere. The more primordial heterotypic cortex or allocortex (Vogt) has fewer cell layers. A form of cortex intermediate between isocortex and allocortex, called juxtallocortex (Vogt), covers the ventral part of the cingulate gyrus and the entorhinal area of the parahippocampal gyrus.
On the basis of local differences in the arrangement of nerve cells (cytoarchitecture), Brodmann outlined 47 areas in the cerebral cortex that, in functional terms, can be classified into three categories: motor cortex (areas 4 and 6), characterized by a poorly developed internal granular layer (agranular cortex) and prominent pyramidal cell layers; sensory cortex, characterized by a prominent internal granular layer (granular cortex or koniocortex) and comprising the somatic sensory cortex (areas 1-3), the auditory cortex (areas 41 and 42), and the visual cortex (areas 17-19); and association cortex, the vast remaining expanses of the cerebral cortex.
Synonym(s): cortex cerebri [TA], pallium [TA], brain mantle, mantle (2)
Farlex Partner Medical Dictionary © Farlex 2012

pallium

(păl′ē-əm)
n. pl. pal·liums or pal·lia (-lē-ə)
The mantle of gray matter forming the cerebral cortex with the underlying white substance.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

pal·li·um

(pal'ē-ŭm) [TA]
The cerebral cortex with the subjacent white substance.
Synonym(s): mantle (2) .
[L. cloak]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

pallium

  1. the tissue next to the shell of molluscs.
  2. the roof of the vertebrate CEREBRUM.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
"Why would we interpret the episcopal pallium seen on Mary standing with her arms raised above the altar in the Lateran Baptistery just half a mile away differently?" Kateusz asked.
O cuidado paliativo e eficaz e auxilia nesse momento, pois diminui o sofrimento, facilitando o relacionamento entre os envolvidos e promovendo cuidado humanizado atraves de uma visao holistica do doente, assim como seu proprio nome diz: pallium, manto, capa, protetor.
"That tradition still exists today and each archbishop and cardinal receives his pallium from the Pope and each is made by the nuns of the Benedictine order of St Cecilia in Trasteverde in Rome who have been making them for over 500 years."
The pallium is worn while taking Mass and is a sign of communion with the Pope and leadership.
The Quality End-of-Life Care Coalition of Canada (QELCCC) emerged from a Senate committee in 2000 and consists of thirty-six national organizations, including the Catholic Health Alliance of Canada, The Way Forward Initiative, The Pallium Foundation, and Canadian Hospice Palliative Care Association.
Al explorar las bases neurales, se ha observado que en los distintos grupos de vertebrados las habilidades de aprendizaje espacial parecen estar asentadas en mecanismos neurales homologos: como el hipocampo en aves y mamiferos, el cortex medial en los reptiles es critico para las habilidades de mapeo cognitivo y, de manera similar, el pallium telencefalico lateral de peces (el presunto homologo del hipocampo de amniotas), esta selectivamente involucrado en la cognicion espacial (Salas et al., 2003).
In line with the tradition, the pontiff was presented with his papal pallium made of lambs' wool - representing the roots of shepherd folk - and the fisherman's ring bearing the image of St Peter holding two keys.
Francis will officially receive the ring and the pallium, a wool stole, during the installation Mass, which is drawing six sovereign rulers, 31 heads of state, three princes and 11 heads of government to the Vatican.
Francis will officially receive the ring and the pallium, a woollen stole, during today's installation mass, which is drawing six sovereign rulers, 31 heads of state, three princes and 11 heads of government to the Vatican.