“By pumping blood all day, every day, the
heart keeps the body’s cells alive.” (P.22)
This time, I’m going to introduce everybody
this book about heart. I could understand a lot of things about heart that I
haven’t ever known before I read this book. And this book was easy to
understand. At the first, do you know where is the heart? The heart is in the
middle of the chest, behind the ribs. The ribs do very important part in the
heart. Because the ribs help to keep the heart safe. And do you know the size
of the heart? A child’s heart is about the size of a fist and an adult’s is
about the size of two fists. The heart has four places to that hold blood.
There are two large places on the bottom and called the right ventricle and
left ventricle. There are two smaller places on the top and called the right atrium
and left atrium. There are four valves in the heart and the valves stop the
blood going back the wrong way. The heart works like a pump, sending blood to
every part of the body. The blood carries important matters like oxygen and
food to every part around the body. If it’s without oxygen and food, the body’s
cells begins to die. Moreover, the blood also carries matters out of the body
that the baby doesn’t need. After this blood has been pumped to every part of
the body, it comes back to the heart. And the right ventricle pushes the blood
into the lungs because it picks up the oxygen it needs in the lungs. The
beating sound of the heart is made a valve closes to stop blood going the wrong
way each time inside the heart. Before the heart beats, the heart fills with
blood, then it pushes the blood out of the heart. Therefore, the heart pumps
all day and all night. When people sleep, the heart pumps slow down but it’s
always pumping. In one day, the heart beats about 100000 times. I thought that
I want to keep a healthy heart after I read this book. This book told me so
important things to live. Please read this book everyone by all means. Thank
you for reading!
[382/9623]
References
Trussell-Cullen, Alan. (2007). THE HEART. South Melbourne, Australia. Usbourne
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