CLASS 7 · LEARNING KNOWLEDGE

Digestive organs – basic principles and functions

How it works

The digestive organs of humans are specialized organs that together enable food intake, breakdown, chemical decomposition, and absorption. The most important organs include the oral cavity, esophagus, stomach, small intestine, large intestine, liver, pancreas, and gallbladder. Each organ fulfills a specific function in the digestive process. Digestion begins in the mouth with mechanical breakdown and enzymatic decomposition, continues in the stomach and small intestine, and most nutrients are absorbed in the small intestine. Absorbed nutrients enter the blood or first the lymph, depending on their type; indigestible residues are excreted.

Note
Each digestive organ has a specific task in the process of food intake and utilization. Assigning organs to functions is fundamental to understanding the digestive system.

An example

Which organ produces most of the digestive enzymes for the small intestine?

The pancreas produces most of the digestive enzymes for the small intestine. It releases enzymes such as amylase, lipase, and proteases into the duodenum, where carbohydrates, fats, and proteins are further broken down.

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Own explanation and own practice exercises by AmyMath. Subject reference framework: Biology. The topic assignment may vary by federal state.