be230cLecture7

Moorman a f m and christoffels v m physiol rev

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Unformatted text preview: Transduced into the Led ­sided Signaling Cascade 5 4/23/13 Developmental Changes in Blood Flow ConducLon MOORMAN A F M , and CHRISTOFFELS V M Physiol Rev 2003;83:1223-1267 ©2003 by American Physiological Society Blood Flow Through the AorLc Sac and AorLc Arches •  •  By end of 4th week, heart pumps blood by peristalLc waves From heart, blood flows through aorLc sac to aorLc arches and into the 2 dorsal aortae, from there thoughout the fetus, returning by the cardinal veins Cardiac septation. MOORMAN A F M , and CHRISTOFFELS V M Physiol Rev 2003;83:1223-1267 ©2003 by American Physiological Society 6 4/23/13 ParLLoning the Looped Heart – SeptaLon, 4 ­6 weeks •  Atrial septaLon •  Ventricular septaLon •  Atrioventricular valve formaLon •  Division of the ouRlow tract Atrial SeptaLon –Septum Primum •  Septum primum: a thin crescent shaped membrane extends from the roof of the atrium •  Foramen primum permits oxygen ­rich blood to pass from right to led Atrial SeptaLon –Foramen Secundum •  Foramen secundum forms as septum secundum...
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This document was uploaded on 04/09/2014.

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