See Also: Hewish, Antony(encyclopedia)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Tudor, Antony(encyclopedia)
Antony, Mark(dictionary)
Antony and Cleopatra(dictionary)
Antony (as used in expressions)(encyclopedia)
Mark Antony(dictionary)
Antony, Mark(encyclopedia)
Saint Antony's Head Beach(tourism)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)

cardiac sound (medicine) and Hewish, Antony (sh)


cardiac sound (medicine)


cardiac sound -->
heart sounds


The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of systole and is heard as a "lubb" sound; the second is produced by the closing of the aortic and pulmonary valves and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the atria; and the fourth is produced by atrial contraction and ventricular filling but is rarely audible in the normal heart. The physiological concept of heart sounds is differentiated from the pathological heart murmurs.


Hewish, Antony (sh)




born May 11, 1924, Fowey, Cornwall, Eng.

British astrophysicist.

In 1967 Hewish determined that the regularly patterned Radio signals (pulses) that Jocelyn Bell Burnell had detected were not caused by earthly interference or, as some speculated, by intelligent life-forms trying to communicate with distant planets but were energy emissions from certain stars. For this work in identifying pulsars as a new class of stars, he shared a 1974 Nobel Prize with Martin Ryle.