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How many chambers are in the heart? 4
Which chambers are near the top of the heart? atrium
How many types of blood vessels are in the circulatory system? 3
Your heart is a __________________________. muscle
When cells use oxygen, they make _________________. carbon dioxide
There are valves inside your heart that act like a ________. door
What part of the blood helps you stop bleeding when you get a cut? platelets
Your blood provides the body with ______ and _______. oxygen and nutrients
What is responsible for making blood cells? bone marrow
Each beat is caused by the ____________ of your heart. contraction
The valves in your heart _________ the back flow of blood. prevent
Vessels that carry blood to the heart are called ___________. veins
What type of blood cell carries oxygen? red
What gives blood it's color? hemoglobin
Which blood cells fight infection? white
Vessels that carry blood away from the heart are called _____________. arteries
Created by: ellenbin