This short film offers a look at respiration and a tour around the circulatory system and digestive system in the human body, through blood vessels and into mitochondria.

An introduction to the amazing functions of the human body's digestive system.

3. Human Digestive system The primary function of the digestive system is to break down food both mechanically and by the use of enzymes so as to release energy that can be used by the body to ...

The human digestive system is a series of organs that converts food into essential nutrients that are absorbed into the body. The digestive organs also move waste material out of the body.