parietal lobe


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

lobe

 [lōb]
1. a more or less well defined portion of an organ or gland.
2. one of the main divisions of a tooth crown.
azygos lobe (lobe of azygos vein) a small anomalous lobe situated at the apex of the right lung, produced when the azygos vein arches over the upper part of the lung instead of at the hilus and presses deeply into the lung tissue to form a fissure that isolates a medial part of the lung.
caudate lobe a small lobe of the liver between the inferior vena cava on the right and the left lobe.
ear lobe the lower fleshy, noncartilaginous portion of the external ear.
flocculonodular lobe one of the main subdivisions of the cerebellum, located inferiorly, consisting of the paired flocculi, their peduncles, and the nodule of the vermis.
frontal lobe the anterior portion of the gray matter of each cerebral hemisphere.
hepatic lobe one of the lobes of the liver, designated the right and left and the caudate and quadrate.
l's of lung the five major subdivisions of the lungs. see accompanying illustration and see lung.
The lobes of the lungs. From Frazier et al., 2000.
occipital lobe the most posterior portion of each cerebral hemisphere, forming a small part of its posterolateral surface. See illustration.
The occipital lobe of the brain. From Applegate, 2000.
parietal lobe the upper central portion of the gray matter of each cerebral hemisphere, between the frontal lobe and the occipital lobe and above the temporal lobe. It is the receptive area for fine sensory stimuli, and the highest integration and coordination of sensory information is carried on here. Damage to it can produce defects in vision or aphasia.
polyalveolar lobe a congenital disorder characterized in early infancy by the presence of far more than the normal number of alveoli in a lobe of the lungs; thereafter, normal multiplication of alveoli does not take place and they become enlarged, i.e., emphysematous.
quadrate lobe
2. a small lobe of the liver, between the gallbladder on the right, and the left lobe.
Riedel's lobe an anomalous tongue-shaped mass of tissue projecting from the right lobe of the liver in some individuals.
spigelian lobe caudate lobe.
temporal lobe a long tongue-shaped process that is the lower lateral portion of each cerebral hemisphere.

pa·ri·e·tal lobe of cer·e·brum

[TA]
the middle portion of each cerebral hemisphere, separated from the frontal lobe by the central sulcus, from the temporal lobe by the lateral sulcus in front and an imaginary line projected posteriorly, and from the occipital lobe only partially by the parietooccipital sulcus on its medial aspect.
Synonym(s): lobus parietalis [TA], parietal lobe [TA]

parietal lobe

n.
The division of each hemisphere of the brain that lies beneath each parietal bone.

parietal lobe

a portion of each cerebral hemisphere that occupies the parts of the lateral and medial surfaces that are covered by the parietal bone. On the lateral surface of the hemisphere the parietal lobe is separated from the frontal lobe by the central sulcus and from the temporal lobe by an imaginary line that extends from the posterior ramus of the lateral sulcus toward the occipital pole. It is concerned with language mechanisms and general sensory functions. Compare central lobe, frontal lobe, occipital lobe, temporal lobe.

parietal lobe

The major lobe in each half of the brain (cerebral hemisphere) that lies under each parietal bone.

lobe

1. a more or less well-defined portion of an organ or gland.
2. one of the main divisions of a tooth crown.

caudate lobe
a small dorsally located lobe of the liver to the right of the caudal vena cava that frequently embraces the right kidney.
ear lobe
an elevated area of skin just below the external auditory meatus in birds.
frontal lobe
the anterior portion of the gray matter of the cerebral hemisphere.
hepatic lobe
one of the lobes of the liver.
occipital lobe
the most posterior portion of the cerebral hemisphere, forming a small part of its dorsolateral surface.
parietal lobe
the upper central portion of the gray matter of the cerebral hemisphere, between the frontal and occipital lobes, and above the temporal lobe. See also parietal lobe.
prefrontal lobe
the part of the brain rostral to the ascending convolution.
quadrate lobe
1. precuneus.
2. a small lobe of the liver, between the gallbladder on the right, and the left lobe.
temporal lobe
the lower lateral portion of the cerebral hemisphere.

parietal

1. of or pertaining to the walls of an organ or cavity.
2. pertaining to or located near the parietal bone.

parietal block
abnormal electrical conduction through the left branch of the bundle of His.
parietal bone
one of two quadrilateral bones forming the sides and roof of the cranium. See Table 10.
parietal cells
cells of the proper gastric mucosa that secrete hydrochloric acid. Called also oxyntic cells.
parietal decidua
see parietal decidua.
parietal hernia
when only the antimesenteric edge of the intestine is incarcerated in the defect of body wall or mesentery.
parietal lobe
the upper central portion of the cerebral hemisphere, between the frontal and occipital lobes, and above the temporal lobe. In the human brain, it is the receptive area for fine sensory stimuli, and the highest integration and coordination of sensory information is carried on in this area. Damage to the parietal lobe can produce defects in vision and aphasia.
parietal peritoneum, parietal pleura
that part of the serous membrane that invests the wall of the cavity, as distinct from the visceral part.
References in periodicals archive ?
Significantly negative correlations were found between YBOCS scores and left superior parietal lobe gray matter r(28)= -.
The aim of this study was to identify the clinical, electrophysiological and neuroimaging characteristics of patients with medically refractory symptomatic parietal lobe epilepsy.
These regions were mainly located in frontal and parietal lobe which were considered as a key region of cognitive function.
Caption: Figure 1: (a) Noncontrast axial CT image, (b) axial diffusion weighted images, (c) axial adjusted diffusion coefficient map that shows bilateral temporal-occipital lobe abscesses (thin arrows) and empyema in the medial left occipital lobe (thick arrow), and (d) axial diffusion weighted image that shows ventriculitis in the right lateral ventricle (short thick arrow), abscess in the left parietal lobe (short thin arrow), and empyema in the posterior falx (long thin arrow) and medial left occipital lobe (long thick arrow).
Post-hoc testing with Bonferroni corrections revealed that Beta activation over the frontal and temporal lobes was significantly greater than over the parietal lobes (p<0.
MIH Degree of Posterior prosencephalon frontal and non-separation parietal lobe fusion.
1) found hyperdense signal changes in the T2A series in bilateral occipitallobes in 14 patients, in the posterior parietal lobes in 13 patients, in the posterior temporal lobes in 9 patients, in the pons in 2 patients and in the thalamus and cerebellum in one patient in their study which included 15 patients diagnosed with PLES.
2) The majority of these occurred in the frontal or parietal lobes.
First, activity increased in the parietal lobe and the premotor cortex, parts of the brain's mirror neuron system.
Each cerebral hemisphere is divided by deeper sulci (grooves) called fissures into five lobes, four located on the surface frontal lobe (the faces of the hemispheres), parietal lobe (central parts of the cerebral hemispheres), temporal lobe (external and lateral parts of the cerebral hemispheres) and occipital lobe (posterior parts of the cerebral hemispheres)-and one located centrally-the island (fig.
A Carnegie Mellon University study found that simply listening to somebody speaking on a phone caused a 37 per cent drop in activity in the brain's parietal lobe, where spatial tasks are managed.
An ophthalmological examination and MRI revealed a CVA in the occipital region with a tumor evident in the parietal lobe.