What are the functions of gastric glands present in the wall of the stomach?

Hydrochloric acid, pepsin and mucus are secreted by gastric gland present in the stomach. They have following functions.

HCL Kills germs present in the food and it decreases P^H of the stomach which is essential for the working of digestive enzymes.

Pepsin digests protein.

Mucus protects stomach’s innerline from HCL.