Cardio embyrology Flashcards
1
Q
The trabeculated portion of the heart comes from:
A
the primitive atrium/ventricle
2
Q
The smooth parts (outflow tract) of L/R ventricles:
A
bulbus cordis
3
Q
Valves, membranous interventricular septum, atrial septum are from:
A
endocardial cushions
4
Q
Where do VSDs most commonly occur?
A
membranous septum
5
Q
Fail migration of ___________ leads to conotruncal abnormalities (transposition, persistent truncus arteriosus, tet of fallot).
A
neural crest cells
6
Q
What are 3 important shunts in the fetus?
A
- ductus venosus (umblical vein by pass liver)
- foramen ovale (RA to LA)
- Ductus arteriosus (pulm A to ao (which reverses in PDA after birth due to less pulm artery resistance)
7
Q
What keeps ductus arteriosus open?
A
less O2
PGE1 and 2 (kEEp PDA open)
8
Q
AllaNtois (btwn bladder and umbilicus) is later called?
A
mediaN umblical ligament (only one in the middle)
9
Q
UmbiLical arteries become:
A
mediaL umbilical ligaments (two)
10
Q
Notochord becomes:
A
Nucleus pulposus
