Front

The heart has ___ chambers.

Back

4

Front

Thin-walled vessels that allow for the exchange of O_{2 ,} CO₂, nutrients and wastes between blood cells or air sacs in the lungs

Back

Capillaries

Front

Deoxygenated

Back

Oxygen-poor

Front

True or False: The heart is a muscle

Back

True

Front

Which piece of the respiratory system lets you make noise? Options: Lungs, Voice box, Mouth, Nose, and Windpipe, Diaphragm

Back

Voice box

Front

Which direction does the Diaphragm move to make you exhale (breathe out)? Options: Up, Down, Left, Right

Back

Up

Front

What is the gas that we inhale? Options: Oxygen, Gasoline, Carbon Dioxide, Methane

Back

Oxygen

Front

What type of cells carry oxygen?

Back

red blood cells

Front

What is the tube that is also known as your wind pipe? Options: esophogus, bronchi, trachea, alveoli

Back

trachea

Front

What is the main function of the respiratory system?

Back

to provide oxygen and remove carbon dioxide from the body