Oxyntic cells are located in

The intestine in human body is about 29 feet long, because

Crypts of lieberkuhn are present in

The structure which prevents entry of good into windpipe during swallowing in mammals is

The hardest substance in vertebrate body is

Epithelium that forms the inner lining of stomach wall

Which of the following is not a proteolytic enzyme ?

Jaundice is a disorder of

When gall bladder of a man is removed

Which set of organ and histological structures present in it is correct ?