in ancient times the beating heart

in ancient times the beating heart was regarded as the very soul of man and the center of the body. today, the heart is known as the organ concerned only with pumping the blood through the body, and the soul of man has been moved to the brain, along with man is thinking, learning and other higher faculties.
it was obvious even to primitive man that the pulsating heart was a pump distributing to the brain and all other parts of the body important substances. later it was found that certain accessory aids help the heart in maintaining an optimal cerculation of the blood. the most important aid is that of the large muscles of the legs which, on contracting, squeezed the veins in the legs. since these veins are supplied with valves that prevent the blood from gravitating to the feet, the blood is actually pumped upward when the veins aare squeezed, relieving the heart of about one third of its work when the legs are used actively, as in cycling, running, swimming, or jogging.
a second important aid is that of the elasticity of the aorta. when hardening of the aorta wall develops as a result of arteriosclerosis, the advantage of the natural elasticity is lost. a third aid is a freely moving diaphragm.

Результаты (русский) 2:

в древности бьющееся сердце считался самой душе человека и центра тела Сегодня in ancient times the beating heart was regarded as the very soul of man and the center of the body. today, the heart is known as the organ concerned only with pumping the blood through the body, and the soul of man has been moved to the brain, along with man is thinking, learning and other higher faculties.
it was obvious even to primitive man that the pulsating heart was a pump distributing to the brain and all other parts of the body important substances. later it was found that certain accessory aids help the heart in maintaining an optimal cerculation of the blood. the most important aid is that of the large muscles of the legs which, on contracting, squeezed the veins in the legs. since these veins are supplied with valves that prevent the blood from gravitating to the feet, the blood is actually pumped upward when the veins aare squeezed, relieving the heart of about one third of its work when the legs are used actively, as in cycling, running, swimming, or jogging.
a second important aid is that of the elasticity of the aorta. when hardening of the aorta wall develops as a result of arteriosclerosis, the advantage of the natural elasticity is lost. a third aid is a freely moving diaphragm.

Результаты (русский) 3:

в древние времена бьющееся сердце считается очень душа и центр тела.сегодня сердце известен как орган только качать кровь через тело, а душу человека, была перенесена в мозг, а также человек думает, учебных и других высших учебных заведений.было очевидно, что даже примитивный человек пульсирующее сердце насос, распространение в мозг и все другие части тела, важных веществ.позже было установлено, что некоторые дополнительные спида помочь сердце в поддержание оптимального cerculation из крови.наиболее важной помощи заключается в том, что крупные мышцы ног, которые на контракты, из вены на ногах.поскольку эти вены поставляются с клапанами, которые препятствуют кровь от миграции на ноги, кровь на самом деле накачали вверх, когда одним из вены, разгрузить сердце примерно одну треть своей работы, когда ноги будут активно использоваться, как в велоспорт, бег, плавание, бег трусцой.второй важной помощи заключается в том, что эластичности аорты.когда ужесточение аорты стены развивается в результате атеросклероза, использовать природные эластичность утрачивается.третий помощи является свободно двигается диафрагма.