Human Digestive System

Subject: Biology - 9TH

Chapter: Nutrition

Type: Free PDF Notes

Human Digestive System — Free written notes for Biology - 9TH on EduFlame Pakistan.

The digestive system is responsible for breaking down food into simpler substances that can be absorbed and used by the body. Digestion involves both mechanical and chemical processes.

Pathway of Food Through the Digestive System

Food passes through the following organs in sequence:

Oral Cavity (Mouth) → Pharynx → Oesophagus → Stomach → Duodenum → Jejunum → Ileum → Caecum → Colon → Rectum → Anus

Each organ performs a specific function in digestion, absorption, or elimination.

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