PMID: 5910193Apr 22, 1966

Amniotic contraction and embryonic motility in the chick embryo

R W Oppenheim


During part of the incubation period of chick embryos the amnion shows spontaneous contractions. Removal of the amnion on days 9, 10, and 11 has no effect on the amount of, or the cyclic aspects of, motility exhibited by the embryo. These observations question the importance of the amnion and yolk-sac as stimulative factors in the initiation and maintenance of cyclic embryonic motility at the ages studied.


Sep 1, 1980·Developmental Psychobiology·J Reitzel, R W Oppenheim
Jul 5, 2011·Differentiation; Research in Biological Diversity·Sara L Al-MusawiNeil C Stickland
Apr 1, 1969·The Journal of Experimental Zoology·V HAMBURGER, C H Narayanan
Apr 18, 2000·Neuroscience and Behavioral Physiology·T M Turpaev, M V Nechaeva
Jan 15, 2000·Journal of Neurophysiology·N S Bradley, C Sebelski
Aug 17, 2019·EvoDevo·Katherine C Woronowicz, Richard A Schneider

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