lobule


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Related to lobule: Paracentral lobule, renal lobule

lobule

 [lob´ūl]
a small segment or lobe, especially one of the smaller divisions making up a lobe. adj., adj lob´ular.
l's of epididymis the wedge-shaped parts of the head of the epididymis, each comprising an efferent ductule of the testis.
hepatic lobule one of the small vascular units composing the substance of the liver.
lobule of pancreas any of the distinct lobules into which the pancreas is divided by extension of septa of the capsule into the gland.
paracentral lobule a lobule on the medial surface of the cerebral hemisphere, continuous with the precentral gyrus and the postcentral gyrus.
parietal lobule one of two divisions, inferior and superior, of the parietal lobe of the brain.
portal lobule a polygonal mass of liver tissue containing portions of three adjacent hepatic lobules, and having a portal vein at its center and a central vein peripherally at each corner.
primary lobule of lung (primary respiratory lobule) the functional unit of the lung; terminal respiratory unit.

lob·ule

(lob'yūl), [TA]
A small lobe or subdivision of a lobe.
Synonym(s): lobulus [TA]

lobule

(lŏb′yo͞ol)
n.
1. A small lobe.
2. A section or subdivision of a lobe.

lob′u·lar (-yə-lər), lob′u·lose′ (-yə-lōs′) adj.
lob′u·lar·ly adv.

lob·ule

(lob'yūl) [TA]
A small lobe or subdivision of a lobe.
Synonym(s): lobulus [TA] .

lobule

(lob'ul?) [L. lobulus, small lobe]
1. A physically defined subsection of an organ.
2. A functionally defined subsection of an organ -- usually, an organ that is composed of many such functional units.

breast lobule

The basic functional unit of the mammary gland, consisting of a tree of several intralobular ducts (also called alveolar ducts), each of which can develop a terminal alveolus composed of milk-secreting epithelial cells. Together, the breast lobules that empty into the same lactiferous duct form a breast lobe.

central lobule of cerebellum

A small lobe at the anterior part of the superior vermiform process.

cerebellar lobule

Any of the macroscopic circumferential (transverse) segments that can be seen on the superior (dorsal) cerebellar surface.

ear lobule

earlobe

lobules of epididymis

Conelike divisions of the head of the epididymis formed by the much-coiled distal ends of the efferent ducts of the testis.

hepatic lobule

Liver lobule.

inferior parietal lobule

The lower half of the posterior segment of the parietal lobe of the brain. The anterior segment of the parietal lobe comprises the postcentral gyrus. Behind this gyrus, the remainder of the parietal lobe is divided by a longitudinal sulcus, the intraparietal sulcus. The region of the parietal lobe above this sulcus is called the superior parietal lobule; the region below the sulcus is called the inferior parietal lobule. The inferior parietal lobule merges into the occipital and temporal lobes. Synonym: inferior parietal gyrus

lobule of kidney

Subdivision of the renal cortex consisting of a medullary ray and surrounding nephrons.
Enlarge picture
LIVER LOBULE

liver lobule

A small subunit of the liver composed of cells (hepatocytes) that process blood from an incoming portal venule and send the resulting blood to an outgoing hepatic venule. There are two types of liver lobule, which look at the same cluster of liver cells from opposite ends. Focusing on the outflow of blood, the classical lobule is composed of those cords of hepatocytes that drain blood into an individual hepatic venule. Focusing on the inflow of blood, the portal lobule is defined to be those cords of hepatocytes that drain blood from an individual portal venule.
Synonym: hepatic lobule See: illustration

lobule of lung

One of the physiological units of the lung consisting of a respiratory bronchiole and its branches (alveolar ducts, alveolar sacs, and alveoli). Synonym: primary pulmonary lobule

pancreatic lobule

An internal subsegment of the pancreas that is drained by a single lobular duct. (Lobular ducts empty directly into the main pancreatic duct.)

paracentral lobule

A gyrus on the upper medial surface of each cerebral hemisphere, behind the medial frontal gyrus and above the cingulate gyrus.. This lobule is the continuation, from the lateral brain surface, of the precentral (motor) and postcentral (sensory) gyri and contains cortical areas representing the lower leg, foot, toes, bladder, rectum, and genitalia.
Synonym: paracentral gyrus; paracentral lobe

parietal lobule

Either the inferior or the superior parietal lobule.

primary pulmonary lobule

Lobule of lung.

secondary pulmonary lobule

The smallest functionally complete unit in the lung. It is about 1 cm wide and 2 cm long, contains a few acini, and is connected to the bronchial tree by a small bronchiole. Each secondary pulmonary lobule is supplied by a pulmonary arteriole, pulmonary venule, and lymphatics and is separated from neighboring secondary pulmonary lobules by connective tissue septa.

superior parietal lobule

The upper half of the posterior segment of the parietal lobe of the brain.
Synonym: superior parietal gyrus

lobules of testis

Pyramidal divisions separated from each other by incomplete partitions called septa. Each consists of one to three coiled seminiferous tubules.

lobules of thymus

Subdivisions of a lobe, each consisting of a cortex and medulla.

lobule

A small LOBE or subdivision of a lobe.
References in periodicals archive ?
Sections of liver of A) rat given paracetamol and Sum extract show the hepatic lobule that appear more or less like control, and B) rat given paracetamol and Sup extract show the hepatic lobule that appear more or less like control.
Diameter of hepatic lobule (um)###1379.2 +- 2.82###1672 +- 1.39###1356.1 1.97###<0.001*
Lobule width (LW): From the most lower attachment of the ear lobule to the head and to outermost maximum transverse width of the ear lobule.
When evaluating this contrast on the post-training data, the right superior parietal lobule and the right cerebellum discriminate between physically trained and untrained sequences more accurately in young adults compared to older adults (Figure 6(a) and Table 4(a)).
Lejeunea angusta is readily recognized by the very small plants (less than 1 mm wide) with strongly convex, wide-spreading leaf lobes with rounded tips and entire margins, large swollen, ovoid lobules (ca.
The protrusion of the ear is measured on an imaginary plane extending from the helical margin to the scalp, which typically projects laterally by 10 to 12 mm at the upper pole, by 16 to 18 mm at midpoint, and by 20 to 22 mm at the lobule. In frontal view, the helix laterally projects from the antihelix at a distance of 2 to 5 mm.
After completing the perfusion procedure, a single specimen was excised in a standardized manner from each perfused lobule from the region contiguous with the fetal surface of the placenta.
Residual skin from the advancement in the preauricular area anterior to the lobule and helix was excised away, and the remaining incision was closed with 5-0 monofilament polypropylene (Prolene) suture.
According to fMRI analysis, the activation induced by HT7 stimulation was observed on the bilateral postcentral gyrus, inferior parietal lobule, inferior frontal gyrus, claustrum, insula, and anterior lobe of the cerebellum, as well as on the left posterior lobe of the cerebellum.
The susceptibility window--when potentially cancer-causing mutations can collect in vulnerable breast lobule cells--only closes when a woman has her first full-term pregnancy.
At the liver lobule level centripetal blood flow creates gradients of oxygen, nutrients and hormones.