On account of relative ease of accessibility, the early embryo circulation is an eminently suitable model, which can help unravel the age-old question of the relative importance of the peripheral circulation, versus that of the heart. Its “simplified” morphological plan, i.e., the absence of valves and lack of innervation, serves as additional advantages over its mature counterpart. Finally, the embryonic and extraembryonic circulations occur on a single plane, rendering the force of gravity almost negligible, in comparison to a horizontally placed animal or vertically oriented human circulatory system. We will now examine several studies where the fundamental question of heart versus circulation has been addressed by the investigators.
Atrial Natriuretic Peptide Chick Embryo Peak Systolic Velocity Circulate Blood Volume Human Circulatory System
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