Digestion and Excretion Vocabulary

 a substance such as a fat, a protein, or a carbohydrate that a living thing needs to survive

• anus
• esophagus
• nutrients
• stomach

the body system that breaks down food into tiny pieces so that the body’s cells can use it for energy

• digestion
• digestive system
• excretory system
• absorb

to take in matter or energy

• absorb
• esophagus
• nutrients
• mouth

an organ of the digestive system that makes chemicals to help the body break down fats and rid itself of harmful substances

• kidney
• liver
• stomach
• mouth

the opening at the end of the digestive track where feces exit the body

• mouth
• intestine
• anus
• kidney

an organ in an animal’s body that removes wastes and helps regulate chemicals in the blood: part of the excretory system

• liver
• kidney
• stomach
• intestine

an organ of the digestive system that removes nutrients and water from digested food

• kidney
• liver
• mouth
• intestine

an organ that covers and protects the bodies of many animals

• skin
• mouth
• anus
• liver

a muscular tube that helps move food from the mouth to the stomach

• stomach
• liver
• kidney
• esophagus

the process by which the body breaks down food so that it can be used for energy

• excretory system 
• digestion
• nutrients
• stomach