Digestive System

The stomach has an acidic environment with a pH of approximately 3 due to the presence of hydrochloric acid, which aids in digestion and kills pathogens.

The duodenum is the first section of the small intestine immediately following the stomach. It plays a critical role in digestion by receiving chyme from the stomach along with bile and pancreatic juices for further digestion.
- It is not part of the large intestine, buccal cavity, or stomach.

Bile is produced and secreted by the liver. It is stored in the gallbladder and released into the small intestine to aid in the digestion and absorption of fats.