Write a note on the liver,gall bladder,and pancreas.

(N/A) Liver: The liver is the largest gland of the body,weighing about $1.2$ to $1.5 \ kg$ in an adult human. It is situated in the abdominal cavity,just below the diaphragm,and has two lobes. The hepatic lobules are the structural and functional units of the liver containing hepatic cells arranged in the form of cords. Each lobule is covered by a thin connective tissue sheath called the Glisson's capsule.
Gall Bladder: The bile secreted by the hepatic cells passes through the hepatic ducts and is stored and concentrated in a thin,muscular sac called the gall bladder. The duct of the gall bladder (cystic duct) along with the hepatic duct from the liver forms the common bile duct.
Pancreas: The pancreas is a compound (both exocrine and endocrine) elongated organ situated between the limbs of the $'U'$-shaped duodenum. The exocrine portion secretes an alkaline pancreatic juice containing enzymes,and the endocrine portion secretes hormones,such as insulin and glucagon.
Common Duct System: The bile duct and the pancreatic duct open together into the duodenum as the common hepato-pancreatic duct,which is guarded by a sphincter called the sphincter of Oddi.