Embryology of CVS 2 Cardiac Septation Lecture notes ANATOMY Fundamentals of Anatomy & Physiology, ISBN: 9780321505897

2/14/2022




EMBRYOLOGY
OF
CARDIOVASCULAR SYSTEM (2)
(CARDIAC SEPTATION)




PREPARED BY PROF GT LEBONA
PRESENTED BY MR NK XHAKAZA




CARDIAC SEPTATION


Occurs on Day 27
Complete by Day 37
Duration 10 days
All chambers divided simultaneously
• Atrio-ventricular canal > R & L
A-V canals
• Common atrium (atrial septum)
• Ventricles (inter-ventricular septum)
• Truncus arteriosus (truncal septum)
• Conus cordis (conus septum)




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, 2/14/2022




CARDIAC SEPTATION
ATRIO-VENTRICULAR CANAL
• Endocardial cushion appears at ventral
(superior) border & dorsal (inferior)
border of A-V canal.
• The two fuse & divide A-V canal into
right & left A-V canals.




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CARDIAC SEPTATION
ATRIO-VENTRICULAR CANAL
• Endocardial cushions appear at ventral
(superior) border & dorsal (inferior) border
of A-V canal.
• Both fuse & divide canal into right & left
A-V canals.




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