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|Heart has been listed as a level-3 vital article in Science. If you can improve it, please do. This article has been rated as C-Class.|
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Please add nerves that innervate the heart, such as the vagus nerve and some other nerves.
Before making additions, or changes, to this article, or any article, have someone with a degree in English, such as myself, proof-read the addition. It is for the grammatical errors on wikipedia that wikipedia is NOT ALLOWED as a source for thesis papers in grade school and/or college; it is not limited to this reason but is with the addition to a lack of thorough bibliographies to document your sources.
If you quote someone else's litterary writings, DO NOT EDIT THEIR grammatical mistakes within the quotes but, if you add something without quotes, paraphrased, correct any mistakes!
Evolution of the heart
How did the heart evolve in earlier life and become a specialized blood pumping organ? The article should make this clear.
- That's a very good quesion, and one I don't think is covered adequately. For whatever reason, the movement of the blood circulation precedes the formation of the heart -- and this fact is really most curious. To explain this phenomenon, there are some who contend that the heart is not so much a pump, as a Hydraulic Ram -- an organ built-up from cumulative peripheral activity. See exerpt from link, below:
- In 1932, Bremer of Harvard filmed the blood in the very early embryo circulating in self-propelled mode in spiralling streams before the heart was functioning. Amazingly, he was so impressed with the spiralling nature of the blood flow pattern that he failed to realize that the phenomena before him contradicted the pressure propulsion principle -- raising the spectre that the heart was not merely a pump forcing inert blood to move with pressure but that the blood was propelled with its own biological momentum -- as can be seen in the embryo, and boosts itself with induced momenta from the heart. The pressure does not cause the blood to circulate but is caused by interrupting the circulation. 
I propose to add more pictures that show well Truncus pulmonales and Aorta
There is too few pictures about real preparates. I feel ashamed about the quality of the current article. Need to take better pictures. Please, do it if you manage before me and upload here.
It is really useful to understand the relative position between the two and their walls from real preparates. You can make a lot of discussion about them which should be done.
I'm not really well versed in the subject, but the flow figures presented in the first line seems to be only for resting humans. — Preceding unsigned comment added by 18.104.22.168 (talk) 22:47, 22 October 2013 (UTC)