Answer:
What protects the stomach lining of gastric juices is the Gastric Mucosa.
Step-by-step explanation:
The Gastric Mucosa is the lining of the stomach, which consists of an internal epithelium, a middle mocous membrane and an external muscularis mucosae. The superficial cells produce mucus that protects the stomach from the attack of acid and digestive enzymes. When the epithelium invaginates within the mucous membrane in various regions of the stomach, different tubular gastric glands are formed. These glands are made up of cells that secrete mucus, enzymes, hydrochloric acid and hormones.
The stomach mucous lining the inside of the stomach with the thickness and texture necessary for our digestive organ not suffer the effects of their own corrosive juices. This mucus lubricates the food bolus to circulate easily through the digestive tract and also forms a thick coating on the inner wall of the stomach to prevent, precisely, being digested by their own juices.
The acids attack, of course, this mucuous wall, but the stomach wall regenerates them continuously. In addition, the stomach lining makes its own antacid, secreting bicarbonate to neutralize the acid.