The Effect of Epinephrine on the Myocardium of the Embryonic Chick
- 1 June 1950
- journal article
- research article
- Published by Wolters Kluwer Health in Circulation
- Vol. 1 (6) , 1362-1368
- https://doi.org/10.1161/01.cir.1.6.1362
Abstract
The myocardium of the embryonic chick heart, before it has been innervated, responds to concentrations of epinephrine as dilute as 1 part in 20,000,000 by an abrupt acceleration in its inherent rate of pulsation. The more slowly the heart beats initially, the more marked is the accelerating effect of epinephrine. Usually the initial acceleration is followed by a period during which the heart slows to a rate intermediate between the initial and the maximal. This deceleration is not due to a decrease in the stimulating effect of the drug applied.Keywords
This publication has 3 references indexed in Scilit:
- The intrinsic pulsation rates of fragments of the embryonic chick heartJournal of Experimental Zoology, 1942
- Age changes in the pulsation frequency of the embryonic chick heartJournal of Experimental Zoology, 1940
- RESPONSE OF EXPLANTED EMBRYONIC CARDIAC TISSUE TO EPINEPHRINE AND ACETYLCHOLINEAmerican Journal of Physiology-Legacy Content, 1931