What is a liver lobule?
The liver lobes are made up of microscopic units called lobules which are roughly hexagonal in shape. These lobules comprise of rows of liver cells (hepatocytes) which radiate out from a central point.
What is the best way to describe liver lobules?
As described above, a liver lobule encompasses the liver tissue that is served by single branch of a central vein (which is a branch of the hepatic vein). The lobule is roughly hexagonal in cross section, with a central vein at its center and portal areas at its peripheral corners.
How many lobules are in the liver?
The liver consists of 2 main lobes. Both are made up of 8 segments that consist of 1,000 lobules (small lobes). These lobules are connected to small ducts (tubes) that connect with larger ducts to form the common hepatic duct.
What are the lobules?
Lobules are the milk-producing glands of the breast. Breast ducts are the thin tubes that carry breast milk from the lobules of the breast to the nipple.
What are hepatic lobules Class 11?
Hint: Hepatic lobules are the building block of liver tissue and blood enters these lobules via the hepatic artery. Lobule is organised and each lobule is hexagonal in cross section.
What is a lobule definition?
A small lobe or a subdivision of a lobe.
What is the classical lobule?
This classical liver lobule is characterized by the presence of a central vein (terminal hepatic vein) located approximately in the middle of the unit, and of areas of connective tissue at its corners, called portal tracts, that contain interlobular branches of hepatic artery and portal vein, biliary ductules.
What is lobule in biology?
(brest LAH-byool) A small part of a lobe in the breast. A breast lobule is a gland that makes milk. Enlarge.
What is the meaning of Lobulated?
: made up of, provided with, or divided into lobules a lobulated tumor.
What are the hepatic ducts?
A tube that carries bile from the liver. The common hepatic duct starts where the right and left hepatic ducts join outside the liver and ends where a duct from the gallbladder joins it to form the common bile duct. It is part of the biliary system.
What is difference between lobe and lobule?
The lobes are further divided into segments and then into lobules, which are hexagonal divisions of the lungs that are the smallest visible subdivision. The lobes are further divided into segments and then into lobules, hexagonal divisions of the lungs that are the smallest subdivision visible to the naked eye.
How is a hepatic lobule structured?
The hepatic lobule is observed as a hexagon-like structure where the central vein is located at the center and the hepatocytes form radiating cords from the central vein, similar to the spokes of a wheel radiating from the central hub. At the outside “corners” of the hexagon are portal triads.
What are lobes?
Medical Definition of lobe : a curved or rounded projection or division: as. a : a more or less rounded projection of a body organ or part the lobe of the ear. b : a division of a body organ (as the brain, lungs, or liver) marked off by a fissure on the surface.
What is meant by lobed?
Definition of lobed adjective. having a lobe or lobes; lobate. Botany. (of a leaf) having lobes or divisions extending less than halfway to the middle of the base.
What does it mean to lobe?
Definition of lobe : a curved or rounded projection or division specifically : a usually somewhat rounded projection or division of a bodily organ or part.
What is a bile duct?
(KAH-mun bile dukt) A tube that carries bile from the liver and gallbladder, through the pancreas, and into the small intestine. The common bile duct starts where the ducts from the liver and gallbladder join and ends at the small intestine. It is part of the biliary system.
Which duct drains the liver?
common hepatic duct
When the liver cells secrete bile, it is collected by a system of ducts that flow from the liver through the right and left hepatic ducts. These ducts ultimately drain into the common hepatic duct. The common hepatic duct then joins with the cystic duct from the gallbladder to form the common bile duct.