embryo Flashcards
1
Q
septum secundum and septum primum fuse to form what
A
atrial septum
2
Q
the heart beats spontenously at which wk?
major internal & external structures of the heart develop b/w which weeks?
A
week 4
week 4-8
3
Q
upon first breath the closure of ductus arteriosus becomes what
A
ligament arteriosum
4
Q
out flow tract formation:
ascending aorta and pulmonary trunk arise from the fusion of which 2 ridges
A
truncal and bulbar ridges
