UNSW Embryology
|
|
DEVELOPMENT OF THE HEART AND
CARDIOVASCULAR SYSTEM
|
Embryology Home
Page
|
|
|
|
|
Page
Links Umbilical
and vitelline venous inflow to the heartAbout
Notes
Next page ventricles
into the aortic system
|
Page
1 | Introduction
Page
2 | Questions
| Abnormal
| OMIM
| Refs
Page
3 | Pig
Stage 13/14
Page
4 | Human
(Stage22)
Page
5 | Selected
Human highpower
Text only
page | WWW
Links
|
|
|
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
|
|
The umbilical
and vitelline (yolk sac) venous inflow to the
heart.
|
|
|
F6:
Oblique section through both
umbilical veins in
body wall. Follow them to E6.
|
|
|
|
|
|
E6-E4:
Both
umbilical
veins with a
large
vitelline vein in the central, mesenteric
region.
|
|
|
|
|
E1,D7:
Umbilical veins enter liver, along with
vitelline. Most venous blood drains
through the liver region into the sinus
venosus, which nestles in the cranial
surface of the growing liver. This is the
site of the caudal attachment of the free
heart to the body mesenchyme.
|
|
|
|
|
D3,D2:
Entry of venous blood into
sinus venosus.
Note smaller
left
horn of sinus venosus, and larger
right
horn of sinous venosus. Sinus venosus is
also located caudal of to atria. Both
right
ventricle and
left
ventricle with
ventricular
septum at this level.
|
|
|
|
|
D1-C7:
Drainage of
right
horn of sinus venosus into
right
atrium.
|
|
|
|
Next page for
embryonic blood flow
|
ventricles
into the aortic system
|
About Notes
- Lecture notes from the Anat 3311 1997
Science Embryology course 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.
|
|
|
m.hill@unsw.edu.au
Date Last Modified: 11/3/99
This site maintained by Dr M. Hill
|
|