The toxic substances are detoxified in the human body by:

Which cells secrete gastric enzymes in the stomach?

The specific type of cells found in the liver are .......

Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

Which of the following is a unicellular gland found in the wall of the gut?

Give scientific reasons:
$(1)$ The pancreas is an exocrine as well as an endocrine gland.
$(2)$ The liver,although not taking part in the process of digestion directly,is an important accessory digestive gland.