Circulatory system + Respiratory system

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

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

What is the main organ of our circulatory system?

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

What do we call the tiny tubes that return oxygen

poor blood back to the heart?

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

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

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

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

We breathe out ________ when we exhale.