parietal lobe

(redirected from Posterior parietal)
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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

The major lobe in each half of the brain (cerebral hemisphere) that lies under each parietal bone.
References in periodicals archive ?
Mountcastle and coworkers [28] hypothesized that the posterior parietal cortex plays an important role in the "internal command" for action.
The remaining branches--anterior and posterior parietal, gyrus angularis, and temporal arteries arise from the posterior trunk.
So Shenbing Kuang and his colleagues were able to prove the coexistence of neurons for these two different planning goals in the posterior parietal cortex.
IPD patients presented a greater activation than controls in right prefrontal (BA9) and posterior parietal (BAs 40 and 7) regions when the short-term WM task was performed.
The headache can be nonspecific in location and quality or it can be localized to the vertex, occipital, posterior parietal, retro-orbital, or other areas of the head and face.
Moving from the novice to the skilled level, the images showed a decreasing number of white spots in the frontal area and the posterior parietal cortex.
(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.
Brodmann areas 5 and 7 (motor areas which correspond to posterior parietal cortex), which occupy large areas of superior parietal lobe, realize certain nerve background connections necessary to achieve movement in space.
She clearly had a TASER dart in the right posterior parietal skull with 4 cm of the dart visible outside of her skull (Figure 1).
Repeat MRI and magnetic resonance angiography on day nine now revealed increased hyper-intensity on T2 and fluid-attenuated inversion recovery images, in the left posterior parietal lobe, consistent with a recent left middle cerebral artery infarct (Figures 2 and 3).
It has been demonstrated that the posterior parietal cortex is involved in attentional processes as well as in the motor planning and preparation of saccades (Andersen, Brotchie, & Mazzoni, 1992; Barash & Zhang, 2006; Goldberg & Segraves, 1989; Rushworth, Johansen-Berg, Gobel, & Devlin, 2003).

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