The heart is an organ that acts like a pump.
It is divided into four chambers: the two upper are called the atria and the two lower are called ventricles.
You can see it in this video:
Monday, 16 November 2015
THE HEART: CIRCULATORY SYSTEM I
The nutrients we eat and the oxygen we breathe are transported to our organs, bones, brain and muscles by the circulatory system.
The heart is an organ that acts like a pump.
It is divided into four chambers: the two upper are called the atria and the two lower are called ventricles.
When blood enters the heart, it's then pumped to the lungs. In the lungs, the red blood cells absorb oxygen. That oxygenated blood is pumped back into the heart. The heart then pumps the oxygenated blood around the body.
You can see it in this video:
The heart is an organ that acts like a pump.
It is divided into four chambers: the two upper are called the atria and the two lower are called ventricles.
You can see it in this video:
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