frontal lobe

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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

fron·tal lobe of cer·e·brum

the portion of each cerebral hemisphere anterior to the central sulcus.
Synonym(s): frontal lobe [TA], lobus frontalis [TA]
Farlex Partner Medical Dictionary © Farlex 2012

frontal lobe

The largest and most anterior part of each cerebral hemisphere.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

frontal lobe

The large, foremost part of the brain. This part constitutes about one-third of the brain and is much more fully developed than in any other primate. Damage to the frontal lobe causes general disturbance of thinking, impairment of initiative and spontaneity, loss of strength of personality, and, if the rear part of the lobe is affected, paralysis.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

frontal lobe

the anterior part of each cerebral hemisphere in mammals.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Frontal lobe

The largest, most forward-facing part of each side or hemisphere of the brain.
Mentioned in: Aphasia
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Quantitative data like ages, distortion score of different regions (base of tongue, body of the mandible, hard palate, orbits/ globes, nasopharynx, pituitary gland, frontal lobe, temporal lobes and brainstem) was presented in the form of mean+ S.D.
[27,28] We used the average CPL of the inter-hemispheric path lengths to assess the level of overall inter-network integration (termed LInter-H) between the left and right hemispheres and also assessed the level of inter-subnetwork integration between the left and right frontal lobes (LInter-F), temporal lobes (LInter-T), parietal lobes (LInter-P), occipital lobes (LInter-O), and subcortical structures (LInter-S).
In the present study, we investigate the association between TMT completion time and accuracy measures with frontal lobe damage in stroke patients using voxel-based lesion-behavior mapping [26-28].
Human frontal lobes are exactly the size expected for a non-human brain scaled up to human size.
More severe TBI and frontal lobe injury often lead to egocentrism--the excessive focus on one's self, and difficulty appreciating the perspective of others.
The evolution of the human frontal lobes is compared to the evolution of our thought processes in terms of cognitive accuracy.
DTI results showed that schizophrenic individuals had structural damage to developing white matter fiber tracts in the frontal lobe, which controls numerous emotional, cognitive and linguistic behaviors.
The first cortical localization that became widely accepted linked fluent, articulate speech to the frontal lobes. Cortical localization of speech was a much-debated issue in the early and mid-19th century, and many scientists had presented data for and against this theory before Broca's epoch presentation in 1861.
Since Mattes' study investigators have continued to examine a link between frontal lobe dysfunction and ADHD.
Four months after receiving his transplant, the patient underwent surgery to resect the left medial frontal lobe, the site of his seizures.
When the patient died in 1861, a postmortem revealed damage to the third convolution on the left frontal lobe of the cerebrum (now known as Broca's convolution).