Mention the three major types of gland cells and their secretion present in

The mucosa of the stomach has glandular cells forming the gastric glands.

There are three major types of gland cells in the gastric mucosa.

- Mucus neck cells, that secrete mucus.

- Peptic cells or chief cells, that secrete pepsinogen.

- Parietal or oxyntic cells, that secrete hydrochloric acid and intrinsic factor, that is needed for the absorption of vitamin B_12.