We have hearts to move our blood.
The basics go like this, blood comes into the heart, and it pumps it to the lungs to pick up oxygen and get rid of carbon dioxide. Then it goes back to the other side of the heart, which pumps it out to the tissues of your body, which need oxygen to function. Then it travels through the veins back to the heart to repeat the process all over again. So, your body gets oxygen, gets the CO2 out, and it's all happy.
2007-05-09 17:51:51
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answer #1
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answered by Emmy 6
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Because Human machinery is made in such a way it needs pumping blood all the time through which oxygen and other things is reached to various tissues and organs and from there the waste products is carried to excretory systems !! IF IT HAS NOT SUPPLIED HEART THAN THE HUMAN BODY MIGHT HAVE THE MODIFIED ONE !OF COURSE THERE ARE FEW PEOPLE WHO DONT HAVE HEART ! THEY ARE HEART LESS !ALWAYS YouRsmE
2007-05-14 15:25:43
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answer #2
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answered by Dr.D.C.Mehta-Jamnagar 3
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Humans are constructed to have blood pump oxygen and nutrients throughout the body and that's the major function of the heart. It's a big PUMP.
It is a lot more complicated than this, but in a nutshell, we have a heart because we need to pump blood.
2007-05-15 09:01:31
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answer #3
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answered by Nurse Annie 4
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Because the heart is the most hard working organ in the body. If it stops, we die. It is responsible for distributing blood throughout the body. THe blood carries the oxygen and nutrients to where they are needed and carries carbon dioxide and waste materials for excretion in the kidneys. It works 24/7, 365 days a year until the day it stops, then we die.
2007-05-09 18:17:25
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answer #4
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answered by nikkitah101 2
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Humans have a heart to pump our blood all over our body to supply our body with oxygen and other such needed things.
2007-05-14 03:35:53
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answer #5
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answered by jess 2
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Well, I'd prefered it if a lot of people didn't have a brain than a heart. But it seems that there are more heartless people in the world that dumb. The world would have been a lot nicer a place if most people were kind, conciderate and naive than ruthless, driven and manipulative
2007-05-13 02:52:53
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answer #6
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answered by nikoleta k 2
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Humans have a heart to feel love and show affection.
2007-05-09 23:20:56
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answer #7
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answered by sheila l 4
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all animals have heart to survive human is no exception.v need the heart to pump our blood to all over our body.u need to study biology about the function of heart,i don't waste my time here in explanation.
2007-05-09 18:41:35
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answer #8
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answered by robert KS LEE. 6
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1. we have a heart so we can have oxygenated (clean) blood around our body. if we don't have a heart we will die.
2. We also have a heart so we can love.
2007-05-09 18:59:08
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answer #9
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answered by charltonfan123 2
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To distribute the blood through out the whole body by pumping.
2007-05-09 17:55:15
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answer #10
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answered by Anonymous
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