lobe (lōb)
occipital lobe,
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.lo´bar
caudate lobe a small lobe of the liver between the inferior vena cava and the left lobe.
ear lobe the lower fleshy part of the external ear.
frontal lobe the rostral (anterior) portion of the cerebral hemisphere.
hepatic lobes the lobes of the liver, designated the right and left and the caudate and quadrate.
insular lobe insula.
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 cerebral hemisphere, between the frontal and occipital lobes, and above the temporal lobe.
polyalveolar lobe a congenital disorder characterized in early infancy by far more than the normal number of alveoli in the lung lobes; thereafter, normal multiplication of alveoli does not take place and they become enlarged, i.e., emphysematous.
quadrate lobe
1. precuneus.
2. a small lobe of the liver, between the gallbladder on the right, and the left lobe.
spigelian lobe caudate l. of liver.
temporal lobe the lower lateral lobe of the cerebral hemisphere.
| occipital lobe n. The posterior lobe of each cerebral hemisphere, having the shape of a three-sided pyramid and containing the visual center of the brain. |
occipital lobe,
one of the five lobes of each cerebral hemisphere, occupying a relatively small pyramidal part of the occipital pole. The occipital lobe lies beneath the occipital bone and presents medial, lateral, and inferior surfaces. Compare central lobe, frontal lobe, parietal lobe, temporal lobe.
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
1. precuneus.
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.
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.
occipital
pertaining to the occiput; located near the occipital bone, as the occipital lobe.
occipital bone
the unpaired bone constituting the back and part of the base of the skull. See also Table 10.
occipital crest
see external occipital crest.
occipital fracture
see basisphenoid fracture.
occipital lobe
see occipital lobe.
occipital somites
the most anterior of the embryo's somites; they are the origin of the occipital cartilages of the skull.
lobe, occipital
Portion of each cerebral hemisphere posterior to the parietal lobe where visual information is received and processing begins. See visual area.
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