Lecture 7- Development of the Great Vessels Flashcards
The left and right aortic arch derivatives
regress- proximal part of maxillary artery
The left and right aortic arch derivatives
regress- stapedial artery
The left and right aortic arch derivatives
L/R common carotid, internal carotid and external carotid aa.
Left 4th aortic arch derivative
part of aortic arch
Right 4th aortic arch derivative
part of r. subclavian a.
Left 6th aortic arch derivative
L. pulmonary a. and ductus arteriosus
Right 6th aortic arch derivative
R. pulmonary a.
Left 7th segmental aortic arch derivative
L. subclavian a.
Right 7th segmental aortic arch derivative
Part of R. subclavian a.
Left Dorsal aorta derivative
Descending thoracic aorta
Right Dorsal aorta derivative
Regress- part od R. subclavian a.
Left aortic sac derivative
part of aortic arch
Right aortic sac derivative
brachiocephalic trunk
Intersegmental aa. (from dorsal aorta) develop into …. aa. of the trunk specifically… and… aa.
- somatic
- intercostal
- lumbar
The vitelline artery is initially … and supply…… and will fuse to form arteries in… of the gut, sepcifically… and…
- paired
- yolk sac
- dorsal mesentery
- celiac a.
- superior mesenteric a.
The umbilical artery is initially … off the dorsal aorta and course to the… and will develop into …
during week 4, also forms secondary connection with dorsal aorta which is the… and AFTER birth, proximal portions persist as…. The distal parts are obliterated to form the…
- paired ventral branches
- placenta
- inferior mesenteric a.
- common iliac a.
- internal iliac and superior vesical aa.
- median umbilical ligaments
Umbilical artery derivatives
- inferior mesenteric, common iliac
- proximal- internal iliac and superior vesical
- distal- median umbilical ligaments
3 major veins in embryonic venous system
vitelline
umbilical
cardinal
The vitelline veins drain
GI and gut derivatives
Before vitelline vv. enter sinus venosus, form plexus around duodenum and pass through..
septum tranversarum
Vitelline veins:
Liver cords growing into the septum interrupt the course and form…
The network around the duodenum will forn a single vessel, the..
- hepatic sinusoids
- hepatic portal vein
Vitelline veins:
A reduction in the… results in…
- left sinus horn
- rechanneling blood from L to R
Enlargement of the right vitelline duct will form the…
The… is also derived from the right vitelline duct
- Inferior vena cava
- Superior mesenteric vein
The right-left anastomoses remodeled of the vitelline vv. drain into portal vein, this is the…
splenic vein and inferior mesenteric vein
The umbilical vv. carry… blood from … to…
- oxygenated
- placenta
- embryo
The right umbilical vein will…
regress and obliterate
The left umbilical vein will lose connection to sinus horn and form…. which bypasses the…. of the liver and drains blood directly into the…
- ductus venosus
- sinusoidal plexus
- IVC
Fate of ductus venosus
ligamentum venosum
Fate of umbilical vein
ligamentum teres hepatis
The cardinal veins drain
head , neck and body wall
The cardinal vv. consist of:
Anterior which drain….
Posterior which drain…
Common which drain…
- cephalic part of embryo
- rest of embryo
- ant and post join to form ? and empty into sinus horns
Posterior cardinal vv. will be supplemented and later replaced by…
subcardinal and supracardinal vv.
Major derivatives of posterior cardinal vv.
common iliac vv.
sacral portion of IVC
