What are the "roads", along which our blood flows?
blood vessels
What kind of blood enters the lungs from the heart?
Deoxygenated blood
Which blood vessels in your circulatory system have thick walls?
Arteries
What does the heart do?
Pumps blood through your body
What kind of blood exits the lungs?
Oxygenated blood
Once oxygenated blood leaves the heart, where does it go next?
To your body's cells
There are 2 kinds of blood. What are they and what do they mean?
Oxygenated - lots of oxygen
Deoxygenated blood- not a lot of oxygen
When does blood flow through your body?
All the time
During and after exercise, your heart rate increases or decreases
increases
How does the oxygen get to our lungs?
When we breathe