U1.M2.Lesson 3.Obtaining Energy and Removing Waste.Quiz.

What is the function of peristalsis?

• To move food through the digestive system.

• To remove excess liquid from the body.

• To chemically digest food to release nutrients.

• To absorb nutrients into the blood.

When does the first step of digestion usually occur?

Food enters the human body through the?

Digestion begins in the mouth with chewing and ____________ beginning to break down the food.

What are the functions of the excretory system?

Why is important to have both mechanical and chemical digestion?

What kind of digestion is chewing?

What is the function of villi in the digestive system?