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Pancreas - Anatomy & Physiology (view source)
Revision as of 08:59, 22 July 2008
, 08:59, 22 July 2008→Species Differences
*In cats, the distal part of the accessory duct atrophies during development, so only the pancreatic duct persists.
*In cats, the distal part of the accessory duct atrophies during development, so only the pancreatic duct persists.
*Cats normally have pacinian corpuscles in the interlobular tissue and are visible grossly as 1-3cm in diameter.
*Cats normally have pacinian corpuscles in the interlobular tissue and are visible grossly as 1-3cm in diameter.
*Dogs and cats produce little pancreatic juice between meals, but lots during a meal.
===Ruminant===
===Ruminant===
*Consists of a distinguishable short body and left and right lobes.
*Consists of a distinguishable short body and left and right lobes.
*The '''left lobe''' lies in the retroperitoneal surface and is in contact with the liver, diaphragm and major vessels dorsally.
*The '''left lobe''' lies in the retroperitoneal space and is in contact with the liver, diaphragm and major vessels dorsally.
**Ventrally, it is in contact with intestines and dorsal sac of the rumen.
**Ventrally, it is in contact with intestines and dorsal sac of the rumen.
*The '''right lobe''' is larger and lies in the mesoduodenum against the flank of the animal and runs part of the length of the descending duodenum.
*The '''right lobe''' is larger and lies in the mesoduodenum against the flank of the animal and runs part of the length of the descending duodenum.
*In sheep and goats the distal part of the accessory duct atrophies during development, so only the pancreatic duct persists.
*In sheep and goats the distal part of the accessory duct atrophies during development, so only the pancreatic duct persists.
**It unifies with the bile duct so that both enter via a common duct.
**It unifies with the bile duct so that both enter via a common duct.
*Constant secretion of pancreatic juice.
===Horse===
===Horse===
*Portal vein perforates the pancreas at the '''pancreatic ring'''.
*Portal vein perforates the pancreas at the '''pancreatic ring'''.
*Both pancreatic and accessory ducts persist throughout development.
*Both pancreatic and accessory ducts persist throughout development.
*Constant secretion of pancreatic juice, which increases after feeding. This provides the caecum and colon with a constant supply of buffered solution, which maintains a stable environment important for microbe survival.
===Pig===
===Pig===