Digestive System

Introduction

The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract (GI tract).

Organs of the Digestive System

The major organs of the digestive system include:

• Mouth
• Esophagus
• Stomach
• Small intestine
• Large intestine
• Liver
• Pancreas

Process of Digestion

The process of digestion involves several stages:

1. Ingestion: Intake of food through the mouth.
2. Digestion: Mechanical and chemical breakdown of food into smaller molecules.
3. Absorption: Passage of nutrients through the walls of the small intestine into the bloodstream.
4. Assimilation: Utilization of nutrients by the body's cells.
5. Elimination: The removal of undigested waste from the body.

Enzymes and Their Functions

Several enzymes play a crucial role in the digestive process, including:

• Amylase: Breaks down carbohydrates into simple sugars.
• Pepsin: Digests proteins in the stomach.
• Lipase: Breaks down fats into fatty acids and glycerol.
• Trypsin: Digests proteins in the small intestine.

Common Digestive Disorders

Some common digestive disorders include:

• Gastroesophageal Reflux Disease (GERD)
• Peptic Ulcer Disease
• Constipation
• Diarrhea
• Appendicitis
• Diverticulitis

Conclusion

The digestive system is essential for breaking down food into nutrients that can be used by the body. Understanding its functions and the processes involved can help in maintaining good digestive health.

[Digestive System] Related Worksheets and Study Guides:

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