✦ LIBER ✦

The heart beat of avian embryos

✍ Scribed by Romanoff, Alexis L.

Publisher: John Wiley and Sons
Year: 1944
Tongue: English
Weight: 178 KB
Volume: 89
Category: Article
ISSN: 0003-276X
DOI: 10.1002/ar.1090890305

No coin nor oath required. For personal study only.

✦ Synopsis

The rate of heart beat has long been used as an indicator of the functioning of the organ itself, and, indirectly of other normal and pathological conditions within the embryo. It has been shown that during the development of fish, birds and reptiles ( Needham, '31) the rate of heart beat changes regularly.

Studies of the avian heart have been made exclusively on chick material under both normal and pathological conditions, particularly in relation to the effect of temperature on the rate of heart beat, The extensive literature on this subject has already been reviewed (Romanoff, '29; Parpart and Glaser, '30; Romanoff and Sochen, '36; Alexander and Glaser, '41).

Although a great deal of work has been done on the heart heat of chick embryos, very little is known about it in other species. It would

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