Functions of Stomach

Question 1

What are the parts of the human stomach?

Answer 1

• cardia
• fundus
• body
• pylorus

Question 2

What are the motor functions of the stomach?

Answer 2

a) storage of large quantities of food
b) mixing of food with gastric secretions to produce chyme
c) slow emptying of chyme into the small intestine at a suitable rate for proper digestion and absorption

Question 3

What are the functions of the gastric juice secreted in the stomach?

Answer 3

a) Digestion of proteins and lipids
b) Hemopoietic function - intrinsic factor helps in erythropoiesis
c) Protective function - mucus protects wall of stomach from proteolytic enzymes and HCl
d) Antibacterial action - HCl destroys the microorganisms that enter GIT through diet
e) Activator function - HCl activates pepsinogen into pepsin