Unit 1 Lesson 5- Vocabulary

Balloon-like structures in the bodies of some animals that take in air and release waste.

• heart

• lung

• mouth

The process that breaks down food into smaller substances that the body can use.

• chewing

• circulation

• digestion

Blood vessels that carry blood away from the heart.

• arteries

• cars

• lungs

The process of moving blood and the materials it carries through an animal’s body.

• waste

• circulation

• brain

A material consisting of solid parts floating in liquid plasma, which moves substances through an animal’s body.

• blood

• water

• food

Blood vessels that carry blood back toward the heart.

• veins

• skin

• blood

A digestive structure that mixes digestive juices with food and absorbs useful parts of the food.

• orange juice

• blood

• small intestine

A digestive structure lined with muscles that stir the food and mix it with digestive juices.

• stomach

• lung

• heart

A digestive structure that removes water from undigested food.

• drain

• blood

• large intestine

A pump made of muscle that moves blood through the body.

• lung

• heart

• stomach