UNSW Embryology
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Development of the
Cardiovascular System
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Embryology Home
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Links  Atrial
MorphologyAbout
Notes
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Embryo sections (st 22)
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Human highpower
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G7
An overview of blood flow through the embryo of
oxygenated blood. Note the umbilical artery and
veins anastomose within the chorion of the
placenta, there is no direct connection of maternal
and foetal blood.
Maternal Blood
umbilical vein
liver
anastomosis
ductus venosus
sinus venosus
atria ventricles
truncus arteriosus
aortic sac
aortic arches
dorsal aorta
pair of umbilical arteries
Maternal Blood
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Atrial Morphology
Examine the atria in detail. Note there is only
one interatrial septum, the
septum primum
with its ostium
primum. The attachment of septum primum to the
most cranial of the
endocardial
cushions.
Now follow the high pressure pathway from
the ventricles into the aortic system. Start from
the cardiac apex on D7
and check that no heart structure is seen below
this level in E1.
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About Notes
- Notes from the Embryology Program compiled and
written by Dr Mark Hill. Some notes derived from
historic class
notes.
- Note Links to OMIM Entries are copies of originals
for computers without internet access. Computers with
internet access can directly access the database.
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m.hill@unsw.edu.au
Date Last Modified: 11/3/99
This site maintained by Dr M. Hill
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