Where the portrations of hearts like we show them come from? They so do not look like hearts in the human body
155343
dont know where they originated from but think of how disgusting it would be to get a valentine with a pic of an actual human heart~ew!
395112
Men have nipples b/c humans all come from a common ancestor.  And when we evolved, certain structures remained w/o a purpose.  This is refered to as having vesigal structures--a body part that has no function.  It is equivalent to hip bones in snakes and wing bones in dolphins.
574341
(1)Heart is  the hollow muscular organ that receives blood from the veins and propels it into and through the arteries.\n(2)It helps to bring blood from the body returns to the right atrium through two large veins, the superior and inferior venae cavae; in addition the blood that has supplied the heart muscle is drained directly into the right atrium through the coronary sinus.
1113267
it is a heart...<3, look how ccute! just turn your head sideways some.
429801
the heart generates its own electrical impulses to stimulate the heart to beat . It is the SA node in the atria and the AV node in the ventricles. \n\nWhen patients have been diagnosed as brain dead - and on a ventilator ( a breathing machine )  - their heart is still beating - because the heart has its own built-in battery pack, so to speak .
220085
It goes back to Aristotle in the 400's BC ! He thought that the heart was the basis of emotions.  This notion kind of stuck around, as you have pointed out.
606273
I know much about the heart. It's one of the most important organs in your body. (probably the most important if you want to stay alive). It is a very complicated system.\n\nYour question is too broad, I don't understand what you're trying to ask. Your question is more of an opinion one. If you have a particular question, I'd would be glad to answer.
1074268
Actually, in people's hearts blood is pumped. There is no emotional feeling in the heart. For many Christians, that blood is very cold.
400990
The two chambers of the heart are completely separate.  There are no valves between the two.
305879
Here are some sites:\n\nhttp://sev.prnewswire.com/health-care-hospitals/20060213/LAM15414022006-1.html\n\nhttp://www.3dscience.com/human_heart_anatomy_pictures.asp\n\nhttp://www.3dscience.com/human_heart_anatomy_diagram.asp\n\nhttp://3dscience.com/heart_model_animation.asp
699027
I think <3 is supposed to be a sideways ♡ heart.\nLook like it to you?\nHmmm.....(^_-)-☆
595108
what are you asking?  The heart is a muscle
67467
No.  The heart is just a muscle.  If you exercise, it beats more, but gets stronger and lasts longer.
223360
The coronary arteries originate OUTSIDE of the heart, both left and right ostiums come from the aorta.\n  There are many within the heart such as the AV brandh of the right, the septals from the left as well as diagonals from the Left anterior descending and the om 1 and 2 from the circumlex artery.\n  Of the left mainstem is the left side which has the LAD and circumflex and intermediate.\n   From the right is the right coronary artery which has branches called the conus, AV, and then bifurcates to the PDA and pvl.
1185344
There are no "good hearts" or "bad hearts" -- we are of the human species. We are still evolving. Before we find fault and condemn in another, we must first look into the mirror of our own hearts...all designs of human kind are reflected there.    "An eye for an eye and the whole world is blind." (GANDHI)      Shift just a little and strive to feel, hear and see that the whole world is more than just a little mad and that the only "devils are those running around inside our own heart." (GANDHI)
6520
Surprisingly, very little.  It depends which organs you're talking about, but it's not full of blood or water, really, not like what you'd think from cartoons or something.
26267
No they didn't, cause they were created, and not born.  Meaning, if they were born they would have had a philopian tube, and that tube is where we get our belly button.