Heart Tube Looping
Embryology
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Cardiorespiratory System
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Heart
Q. The heart takes on an S-shape when:
a
Elongation is complete
b
The sinus venosus is in line with the truncus arteriosus
c
The ventricle is displaced to the left and the atrium moves dorsally and cranially
d
Day 23
e
All of the above
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