Question

Bile juice is secreted from
A. Salivary glands
B. Intestinal glands
C. Stomach
D. Liver

Answer 1

Hint:
Bile is a digestive juice which is secreted by the hepatic cells of the liver and then stored in the gallbladder. Bile salts help in the digestion of fats in the intestine by bringing about their emulsification (conversion of large fat droplets into small ones).

Complete answer:
Bile, a greenish yellow secretion that is produced in the liver and passed to the gallbladder for storage. It transports into the first region of the small intestine, the duodenum where the digestion of fats occurs. Bile is mainly composed of bile pigments, bile salts, phospholipids, cholesterol, water, and electrolyte chemicals that keep the total solution slightly alkaline (with a pH of about 7 to 8). The total amount of bile secreted into the duodenum is controlled by various hormones like cholecystokinin, secretin, gastrin, and somatostatin and also by the vagus nerve. About 500- 1,000 ml of bile is secreted by the liver in a day.
Bile serves the following functions:
> Neutralisation of HCl of chime (semifluid food that comes from the stomach)
> Emulsification (breaking of large fat droplets into the smaller ones)
> Absorption of fat and fat soluble vitamins like vitamin A, D, E and K.
> Activation of lipase
> Stimulation of peristalsis
> Excretion
Among the given options:
> Salivary glands secrete saliva into the oral cavity.
> Intestinal glands secrete intestinal juice or succus entericus that take part in digestion of food.
> Stomach secretes HCl and some enzymes that take part in initial digestion.

Thus, the correct answer is option D.

Note: Bile secreted by the hepatic cells of liver, passes through the hepatic ducts and is stored and concentrated in a thin muscular sac called gallbladder.