Harvey William


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Har·vey

 (här′vē), William 1578-1657.
English physician who demonstrated (1628) that blood circulates through the human body with the heart acting as a pump.

Har·vey

(här′vē), William 1578-1657.
English physician and physiologist who was the first to demonstrate the function of the heart and the circulation of blood throughout the human body (1628).
Biography In the second century a.d., the Greek physician Galen theorized that blood is created in the liver, passes once through the heart, and is then absorbed by bodily tissues. Galen's ideas went unchallenged until 1628, when William Harvey published a book describing the circulation of blood throughout the body. Through his observations of human and animal dissections, Harvey saw that blood flows from one side of the heart to the other and that it flows through the lungs and returns to the heart to be pumped elsewhere. There was one missing part of the cycle: How did the blood pumped to distant body tissues get into the veins to be carried back to the heart? As an answer, Harvey offered his own, unproven theory, one that has since been shown to be true: blood passes from small, outlying arteries through tiny vessels called capillaries into the outlying veins. Harvey's views were so controversial at the time that many of his patients left his care, but his work became the basis for all modern research on the heart and blood vessels.
References in periodicals archive ?
SLEEPING Harvey William Henry was born on August 27, weighing 8lb 15oz.
Regional spokesman Harvey Williams said: 'The five interest rate rises in the last eight months appear to have slowed the house price rises.
In addition, the number of sales being completed has rocketed according to Harvey Williams, Coventry and Warwickshire regional spokesman for the Royal Institute of Chartered Surveyors.
Harvey Williams has been named chief operating officer of Inland Pipe Rehabilitation (IPR), a leading provider of underground rehabilitation solutions with offices throughout the U.
Harvey Williams, aged 4 Jane said the consultant had told her that Harvey would have to be induced on March 16.
Chief executive Grainia Long said: "We are also disappointed that the Government did not Harvey Williams include any more details on the operation of the PS10 billion loan guarantee fund announced in September.
Harvey Williams has been on both sides of the bitter Chiefs-Raiders rivalry that will be renewed Monday night.
Local regional spokesman for the Royal Institution of Chartered Surveyors, Harvey Williams, says the chancellor should start by extending the stamp duty holiday on properties sold for less than pounds 250,000 in order to keep the market moving.
Harvey Williams, who rushed for 1,114 yards for the Raiders four seasons ago but was shuttled between tight end and fullback the past two years, was cut by Oakland as the team opened minicamp.
Certainly last week's mention of former City manager Terry Butcher being burgled when he lived in Hunningham, near Rugby, stirred a bitter-sweet memory for Harvey Williams.
Offensively, the Raiders won't have veteran running back Harvey Williams, who has a partial tear to his right calf muscle.
Harvey Williams, president of Coventry RNLI, thanked the people of the city for their generosity.