Learn about the process of digestion and understand the importance of enzymes in the digestive system. View examples of enzymes that help with the digestion process.

For example, the digestive system of a mollusk consists of a mouth and a stomach, while the excretory system is defined by the kidney (nephridia), anus, and excurrent siphon.

Learn how the digestive system works in this educational video lesson for kids. Explore how food travels through the body, and test your knowledge with a quiz.

Discover how the human digestive system, one of the most important systems in the human body, works. Learn what each part does, and then see how much you remember with a quick quiz.

Learn about assimilation in biology with our engaging video. Explore the anatomy and examples of how organisms transform nutrients into energy, along with a quiz.

The gastrointestinal tract (GI tract) is the digestive system of the body. It takes food that is consumed by an organism and processes it into usable molecules. Then it packages the …

Get help with your Human digestive system homework. Access the answers to hundreds of Human digestive system questions that are explained in a way that's easy for you to …

What is the digestive system? The digestive system is a system of many different organs working in conjunction to absorb nutrients and dispose of waste. In healthy individuals, the digestive ...

Explore the functions of the digestive system in this engaging video lesson for kids. Learn how it works and why it's essential for the body, then take a quiz

The digestive system consists of the gastrointestinal tract, liver, pancreas, and gallbladder. The gastrointestinal tract, also referred to as the GI tract, is a long tube of hollow organs that ...