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Development of the amphibian heart

The early differentiated heart consists of a simple tube which becomes divided into three chambers. The fused pair of vitelline veins becomes the meatus venosus which empties into the first division of the heart, the sinus venosus. Then follows (more anteriorly) the thinwalled atrium, the thick-walled ventricle, and finally the bulbus arteriosus (bulbus aortae) which leads to the ventral aorta or truncus arteriosus.

Links: The Frog Heart

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
Frog Development (1951): 1 Introduction | 2 Rana pipiens | 3 Reproductive System | 4 Fertilization | 5 Cleavage | 6 Blastulation | 7 Gastrulation | 8 Neurulation | 9 Early Embryo Changes | 10 Later Embryo or Larva | 11 Ectodermal Derivatives | 12 Endodermal Derivatives | 13 Mesodermal Derivatives | 14 Summary of Organ Appearance | 15 Glossary | 16 Bibliography | Figures


Rugh R. Book - The Frog Its Reproduction and Development. (1951) The Blakiston Company.

Cite this page: Hill, M.A. (2024, April 25) Embryology Rugh 157.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current10:40, 26 April 2013Thumbnail for version as of 10:40, 26 April 2013993 × 1,000 (183 KB)Z8600021 (talk | contribs){{Rugh1951 footer}} Category:Heart Category:Cardiovascular