Digestion

Definition

Digestion is the process by which the body breaks down food into smaller components so that nutrients can be absorbed and used for energy, growth, and cell repair.

Scientific / Technical Definition

Digestion is a complex biochemical process that involves mechanical and enzymatic breakdown of food into molecules small enough to be absorbed into the bloodstream. This process begins in the mouth with chewing and saliva enzymes, continues in the stomach with gastric acids, and is completed in the small intestine where most nutrient absorption occurs.

Benefits

• Efficient nutrient absorption
• Energy production
• Growth and tissue repair
• Elimination of waste products
• Maintenance of overall health and metabolism

Examples

• Chewing food initiates digestion in the mouth.
• The stomach uses acids to break down proteins.
• Enzymes in the small intestine further digest carbohydrates, proteins, and fats.

Additional Information

• Effects: This process is crucial for converting food into the essential nutrients that are needed for energy, cell repair, and growth.

Related Terms

• Metabolism

References

• Understanding Digestion and Absorption
• The Digestive Process