Unit 12 Vocabulary

A group of parts or things that work together.

• Blood

• Heart

• System

• Diaphragm

The red liquid in our bodies.

• Pulse

• Blood

• Arteries

• Veins

The organ in our body that pumps blood through our body.

• Lungs

• Trachea

• Heart

Tubes in our bodies that carry blood away from the heart.

• Veins

• Arteries

• Capillary

The tubes in our body that carry blood to the heart.

• Veins

• Arteries

• Capillary

The smallest tubes in our bodies that carry blood.

• Veins

• Arteries

• Capillary

The organ that brings oxygen to our body.

• Heart

• Lungs

• Trachea

The tube in our throat that carries oxygen to our lungs.

• Heart

• Lungs

• Trachea

The organ between our lungs and stomach that helps us breathe.

• Heart

• Lungs

• Trachea

• Diaphragm

The gas we breathe out when we exhale.

• Oxygen

• Carbon Dioxide