28+ The Digestive System Diagram Blank PNG. The human digestive system is the means by which tissues and organs receive nutrients to function. For example, fiber helps move food through the digestive tract.

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A digestive system is a group of organs consisting of the central gastrointestinal (gi) tract and its associated accessory organs that break down food into the glands of the digestive system consist of the tongue, salivary glands, liver, gall bladder, and pancreas. Labeled diagram of the digestive system anatomy. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract (gi tract).

Serotonin is a vasoconstrictor and stimulates the smooth muscles.

A classroom unit on digestion is also a great time to talk about health and nutrition. Digestion is a complex process, involving a wide variety of organs and chemicals that work together to break down food, absorb nutrients, and eliminate wastes. The gastrointestinal tract, also called the digestive tract, alimentary canal, or gut, is the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste. Digestive system helps in breaking complex food into simpler forms.