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Who said: “God does not care about our mathematical difficulties. He integrates empirically.”
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Home > Category Index for Science Quotations > Category Index A > Category: Artery

Artery Quotes (7 quotes)

A man is as old as his arteries.
Science quotes on:  |  Age (100)  |  Anatomy (55)  |  Old (60)

A story about the Jack Spratts of medicine [was] told recently by Dr. Charles H. Best, co-discoverer of insulin. He had been invited to a conference of heart specialists in North America. On the eve of the meeting, out of respect for the fat-clogs-the-arteries theory, the delegates sat down to a special banquet served without fats. It was unpalatable but they all ate it as a duty. Next morning Best looked round the breakfast room and saw these same specialists—all in the 40-60 year old, coronary age group—happily tucking into eggs, bacon, buttered toast and coffee with cream.
'Objections To High-Fat Diets', Eat Fat And Grow Slim (1958), Ch. 3.
Science quotes on:  |  Age (100)  |  Charles Best (3)  |  Breakfast (6)  |  Butter (5)  |  Coffee (10)  |  Cream (4)  |  Duty (41)  |  Eat (27)  |  Egg (37)  |  Fat (9)  |  Heart (80)  |  Medicine (254)  |  Meeting (14)  |  Specialist (14)  |  Toast (6)

Given one has before oneself a strong, healthy, youth rich in spirited blood and a powerless, weak, cachectic old man scarcely capable of breathing. If now the physician wishes to practise the rejuvenating art on the latter, he should make silver tubes which fit into each other: open then the artery of the healthy person and introduce one of the tubes into it and fasten it into the artery; thereupon he opens also the artery of the ill person...
[First detailed description of blood transfusion (1615)]
In N.S.R. Maluf, 'History of Blood Transfusion', Journal of the History of Medicine and Allied Sciences (1954), 9, No. 1, 59.
Science quotes on:  |  Blood (81)  |  Silver (23)  |  Transfusion (2)

I finally saw that the blood, forced by the action of the left ventricle into the arteries, was distributed to the body at large, and its several parts, in the same manner as it is sent through the lungs, impelled by the right ventricle into the pulmonary artery, and that it then passed through the veins and along the vena cava, and so round to the left ventricle in the manner already indicated. Which motion we may be allowed to call circular, in the same way as Aristotle says that the air and the rain emulate the circular motion of the superior bodies; for the moist earth, warmed by the sun, evaporates; the vapours drawn upwards are condensed, and descending in the form of rain, moisten the earth again; and by this arrangement are generations of living things produced.
From William Harvey and Robert Willis (trans.), The Works of William Harvey, M.D. (1847), 46.
Science quotes on:  |  Air (127)  |  Aristotle (130)  |  Arrangement (38)  |  Blood (81)  |  Body (158)  |  Circular (2)  |  Earth (389)  |  Emulate (2)  |  Evaporate (2)  |  Generation (88)  |  Impelled (2)  |  Living (39)  |  Lung (16)  |  Motion (107)  |  Produced (8)  |  Rain (25)  |  Sun (168)  |  Superior (26)  |  Thing (37)  |  Upwards (2)  |  Vapour (8)  |  Vein (10)  |  Ventricle (5)

If we want an answer from nature, we must put our questions in acts, not words, and the acts may take us to curious places. Some questions were answered in the laboratory, others in mines, others in a hospital where a surgeon pushed tubes in my arteries to get blood samples, others on top of Pike’s Peak in the Rocky Mountains, or in a diving dress on the bottom of the sea. That is one of the things I like about scientific research. You never know where it will take you next.
From essay 'Some Adventures of a Biologist', as quoted in Ruth Moore, Man, Time, And Fossils (1953), 174.
Science quotes on:  |  Act (53)  |  Answer (147)  |  Blood (81)  |  Bottom (19)  |  Curious (14)  |  Dive (6)  |  Hospital (28)  |  Laboratory (106)  |  Mine (14)  |  Nature (820)  |  Place (60)  |  Push (10)  |  Question (243)  |  Research (435)  |  Sample (6)  |  Sea (109)  |  Surgeon (37)  |  Tube (4)  |  Word (177)

The power of the eye could not be extended further in the opened living animal, hence I had believed that this body of the blood breaks into the empty space, and is collected again by a gaping vessel and by the structure of the walls. The tortuous and diffused motion of the blood in divers directions, and its union at a determinate place offered a handle to this. But the dried lung of the frog made my belief dubious. This lung had, by chance, preserved the redness of the blood in (what afterwards proved to be) the smallest vessels, where by means of a more perfect lens, no more there met the eye the points forming the skin called Sagrino, but vessels mingled annularly. And, so great is the divarication of these vessels as they go out, here from a vein, there from an artery, that order is no longer preserved, but a network appears made up of the prolongations of both vessels. This network occupies not only the whole floor, but extends also to the walls, and is attached to the outgoing vessel, as I could see with greater difficulty but more abundantly in the oblong lung of a tortoise, which is similarly membranous and transparent. Here it was clear to sense that the blood flows away through the tortuous vessels, that it is not poured into spaces but always works through tubules, and is dispersed by the multiplex winding of the vessels.
De Pulmonibus (1661), trans. James Young, Proceedings of the Royal Society of Medicine (1929-30), 23, 8.
Science quotes on:  |  Blood (81)  |  Capillary (4)  |  Doubt (86)  |  Frog (29)  |  Lens (11)  |  Lung (16)  |  Membrane (8)  |  Microscope (58)  |  Physiology (60)  |  Skin (13)  |  Structure (154)  |  Tortoise (6)  |  Transparency (3)  |  Vein (10)  |  Vessel (18)

This is the right cavity of the two cavities of the heart. When the blood in this cavity has become thin, it must be transferred into the left cavity, where the pneuma is generated. But there is no passage between these two cavities, the substance of the heart there being impermeable. It neither contains a visible passage, as some people have thought, nor does it contain an invisible passage which would permit the passage of blood, as Galen thought. The pores of the heart there are compact and the substance of the heart is thick. It must, therefore, be that when the blood has become thin, it is passed into the arterial vein [pulmonary artery] to the lung, in order to be dispersed inside the substance of the lung, and to mix with the air. The finest parts of the blood are then strained, passing into the venous artery [pulmonary vein] reaching the left of the two cavities of the heart, after mixing with the air and becoming fit for the generation of pneuma.
Albert Z. Iskandar, 'Ibn al-Nafis', In Charles Coulston Gillispie (ed.), Dictionary of Scientific Biography (1974), Vol. 9, 603.
Science quotes on:  |  Air (127)  |  Blood (81)  |  Heart (80)  |  Vein (10)

Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
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