Morphology of the Gall Bladder and Extrahepatic Ducts in the Postnatal Ages of Guinea Pig
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Date
2020-06
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Abstract
Gall bladder is a small pocket like organ for the storage and concentration of bile. Gall
bladder was collected from 24 guinea pigs of four different postnatal ages namely 0-2
weeks, 2-8 weeks, 8-16 weeks and 16-32 weeks of age with six animals each irrespective
of sex were collected from the Department of Laboratory Animal Medicine, Madhavaram
Milk Colony, Chennai with Ethical committee approval. Gall bladder was completely seen
on the visceral surface of the liver but the body of the gall bladder was seen on the parietal
surface. It was found in the gall bladder fossa located between the right medial lobe and
quadrate lobe of the liver and was well adapted to the gall bladder fossa of the liver. But it
was extended slightly outside the liver border. At the neck region of the gall bladder, it had
a swelling which continued as cystic duct. The gall bladder with full secretion was round
to elongate in shape. It was transparent in colour. When filled with bile, it had light green
colouration. It was soft to touch and had smooth surface. The left hepatic duct was formed
by the hepatic ducts of quadrate lobe, left lateral lobe and left medial lobe. The right
hepatic duct was formed by the hepatic ducts of caudate lobe, right lateral lobe and right
medial lobe. The cystic duct first joined with the left hepatic duct and then with the right
hepatic duct and formed common bile duct. The common bile duct had an ampullary
dilation when it opened to the duodenum. The gall bladder attached to the right medial
lobe by a ligament. A small ligament was found connecting the gall bladder to the quadrate
lobe.
Description
TNV_IJCMAS_2020_9(6)1110-1116
Keywords
Veterinary Science