The Cardio Vascular System
What does the heart look like?
The human heart is about the size of your closed fist, it is usually red but for people that are overweight it is yellow because of the yellow fat. Some people also say it looks like a upside down pear.
Why do we need blood to be pumped around the body?
The heart is used to pump blood aaround the body, some organs in our body need the oxygen that it carries in the blood.
What is blood pressure?
Blood pressure is the pressure of blood that is pushing up against the walls of your blood vessels in your body.
Why does your pulse increase when you do excersise?
When you do excersise the muscles inside your body need more oxygen, this results in your heart pumping alot faster which means that you have a quicker pulse
No comments:
Post a Comment