Answer:
Step-by-step explanation:
Through peristalsis, the bolus reaches the stomach. In the stomach, both mechanical and chemical digestion occurs. Chemical digestion occurs when gastric juice secreted from gastric glands acts on the bolus. Gastric juice contains secretes mucus, pepsinogen and hydrochloric acid (HCl). The food mixes thoroughly with the acidic gastric juice of the stomach. After mixing bolus becomes chyme. The pepsinogen in the presence of hydrochloric acid gets converted into the active enzyme pepsin. Pepsin converts proteins into proteases and peptones (peptides). A small amount of lipase, a lipid digesting enzyme secreted from gastric glands.