Circulatory system + Respiratory system

The __________ system carries oxygen and nutrients to all parts of our bodies?

• respiratory

• circulatory

What does the circulatory system help our blood carry away from our body?

• oxygen

• hydrogen

• carbon dioxide

• helium

What is the main organ of our circulatory system?

• heart

• lungs

• skin

• liver

What do we call the tiny tubes that carry blood away from the heart?

• valves

• arteries

• atria

• bones

What do we call the tiny tubes that return oxygen

poor blood back to the heart?

• arteries

• chambers

• veins

• ventricles

What do we call the smallest blood vessels in our bodies?

• atoms

• capillaries

• tissues

• cells

The yellowish fluid that is in the blood that contains nutrients is called __________.

• plasma

• white blood cells

• red blood cells

• platelets

The part of the blood that helps you stop bleeding when you cut yourself is called __________.

• red blood cells

• platelets

• plasma

• white blood cells

When we breathe in, our bodies use _________ to live.

• carbon monoxide

• carbon dioxide

• nitrogen

• oxygen

We breathe out ________ when we exhale.

• carbon monoxide

• carbon dioxide

• helium

• oxygen