Chyme

Definition

Chyme is the semi-fluid mass of partly digested food that is expelled by the stomach into the duodenum. It contains gastric juices and partially digested food particles.

5 Must Know Facts For Your Next Test

1. Chyme is formed in the stomach after mechanical and chemical digestion.
2. The acidic nature of chyme is due to the presence of hydrochloric acid.
3. It passes from the stomach to the small intestine through the pyloric sphincter.
4. Enzymes from the pancreas and bile from the liver further digest chyme in the small intestine.
5. The consistency and pH of chyme are crucial for proper nutrient absorption.

Review Questions

• What role does hydrochloric acid play in the formation of chyme?
• How does chyme move from the stomach to the small intestine?
• Why is it important for enzymes and bile to act on chyme in the small intestine?

Related terms

Pyloric Sphincter: The valve that controls the passage of chyme from the stomach to the duodenum.

Gastric Juices: A combination of hydrochloric acid, pepsin, and other secretions that aid in digestion within the stomach.

Duodenum:

The first section of the small intestine where chyme is mixed with digestive enzymes and bile.