Think about taking a breath… Think about making your heart beat… Think about moving the blood through your body… Think about what you had for dinner last night…

Did you forget to breathe? Heart still beating? Blood still flowing?

Of course! We don't have to think about breathing, or about how the oxygen we breathe gets to the parts of our body that need it. Hey, we don't even have to think about making our heart beat! Our cardiovascular system takes care of all of that for us. It's automatic!

The cardiovascular system has two major jobs: