Question

By which of the following, bile is secreted in the human digestive system?
(A) Pancreas
(B) Liver
(С) Kidney
(D) Stomach

Answer 1

Hint: The bile that get released into the duodenum contains bile pigments (bilirubin and biliverdin), bile salts (sodium bicarbonate, sodium glycocholate, sodium taurocholate), cholesterol and phospholipids. Bile has no enzyme. Bile helps in emulsification of fats, ie, breaking down of the fats into very small micelles (a combination of any acids, monoacylglycerols and bile salts). Bile also activates lipases.

Complete answer:
Hepatic cells secrete bile and are transported to the gallbladder through hepatic ducts. Gall bladder is a thin muscular sac that has a capacity of 30 to 50 ml. Here (gallbladder), the bile is stored and concentrated. The ducts of gallbladder (cystic duct) along with the hepatic duct from the liver, forms the common bile duct.
Now let us match this with given options:
Pancreas: pancreas is a compound both( exocrine and endocrine) gland. The exocrine part of the pancreas always secretes an alkaline pancreatic juice containing various enzymes and its endocrine part secretes hormones, insulin and glucagon.
Liver :- Hepatic cells secrete bile and transported to the gallbladder through hepatic ducts Hepatic lobules are the structural and functional units of liver. Thus this option is correct.
Kidney :- nephrons are the structural and functional unit of kidney. They are concerned with the main function of expelling out waste that is excretion.
Stomach :- it is a bag like structure and is primarily involved indigestion . It contains gastric glands which helps in digestion.

Our required answer is B) Liver.

Note: Liver is the largest gland of the body weighing about 12 to 1.5 kg in an adult human. It is situated in the abdominal cavity. Just below the diaphragm, it has two lobes lo right and left lobes. Hepatic lobules are the structural and functional units of 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.