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"Hi everyone, my name is Mikey and 

today I learned some pretty neat stuff 

about our bodies! It was all about the 

insides of our bodies like our heart, 

blood and blood vessels. This is called 

our circulatory system. I learned so 

much today that I wanted to share it 

with all of you too!" 

"So lets start with our heart! Did you 

know that in our whole lifetime our 

heart can beat 3 billion times! Crazy 

huh? Anyways, our heart is one of the 

most important parts in our body. This 

is was keeps us alive. The heart gets 

messages from its body whether or 

not you need more or less blood 

flowing in your body."

"Your heart is about the size of your 

fist and has 4 chambers. The bottoms 

two are called the right and left 

ventricles. These two pump your blood 

out of your heart.   The upper two 

chambers are called the right and left 

atria. These two receive the blood 

from the heart. Both upper and lower 

chambers work as a team to have the 

blood flow through your body."

"This brings me to the blood in our 

body. Blood carries all types of things 

like nutrients, water and oxygen to 

and from our body cells. There is 

different types of blood in our body 

too. There is Red Blood Cells, White 

Blood Cells   and Platelets." 

"Red Blood Cells duty is to carry the 

oxygen and carbon dioxide through 

our body. White Blood Cells fight off 

our germs and try to get rid of all the 

bad things in our system.   Platelets are 

scabs and stops our body from 

bleeding when we get a cut."

Red and 

White Blood 

Cells

"In our body we have three types of blood 

vessels. We have arteries, capillaries and 

veins. Blood vessels are attached to the 

heart Arteries and veins run through your 

whole body, from your legs to your head."

"Arteries carry the oxygen away from 

your heart. The veins job is to bring back 

the blood to your heart and the capillaries 

are little thin connectors that connect the 

arteries and veins." 

"Who knew this was all going on through 

our body all the time!"

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