Which gland is the largest gland in the human body?

Study thoroughly the following statements and identify which of the following is/are correct and incorrect?
$I.$ Bile salt present in bile is responsible for emulsifying the fats in the small intestine.
$II.$ Sodium and potassium salts of glycocholic and taurocholic acid are bile salts.
$III.$ The $pH$ of hepatic bile is $8.6$,while the $pH$ of gall bladder bile is $7.6$ or $7.5$.
$IV.$ The flow of bile from the liver takes place through the hepatic duct,common bile duct,hepatopancreatic ampulla,and finally to the first part of the small intestine.
$V.$ Rats and horses do not require a gall bladder to store bile.
Choose the correct option.

The number of salivary glands in humans is

Which of the following shows the correct pairing for salivary glands in humans and their respective ducts?

Which of the following gastric cells indirectly help in erythropoiesis?

Bilirubin and biliverdin are derived from which of the following?