Development Of Great vessels Flashcards
Paired dorsal artae
Connected to heart thru aortic arches, supply yolk sac
Fuse to become descending aorta
Aortic sac
Rostral most part of truncus arteriosus
Has paired aortic arches
Paired intersegmental arteries (branch of aorta)
Grow btwn somites to supply blood to body wall
Form: posterior intercostal aa., lumbar aa., subclavian aa., common iliac aa.
What forms subclavian aa.?
7th intersegmental aa.
What forms common iliac aa.?
5th lumbar intersegmental aa.
Unpaired vitelline arteries (branch of aorta)
Supplies yolk sac derivatives
Form esophageal and bronchial aa.; celiac, superior, and inferior mesenteries aa.
Paired umbilical arteries (aorta)
Forms (proximal) internal iliac arteries, superior vesical a., and medial umbilical ligamen
Paired lateral splanchnic arteries (aorta)
Form renal, suprarenal, and gonadal arteries
Truncus arteriosus
Arterial trunk that originates from both ventricles that will develop into aorta and pulmonary trunk
What aortic arches are major contributors to definitive arteries
3,4,6
What aortic arches degenerate?
1,2,5
What does aortic arch 1 form part of
Maxillary artery
What does aortic arch 2 form part of
Stapedial artery
Proximal part of Arch 3
Common carotid artery
What forms de novo from common carotid and what does it supply?
External carotid aa., supplies structures external to skull
Distal part of arch 3
Forms part of internal carotid artery (w/ dorsal aorta)
Which dorsal aortae degenerate?
Between 3rd and 4th arch
Left aortic arch 4
Contributes to Arch of Aorta (w/ aortic sac and left dorsal aorta)
What combines to make Definitive Arch of Aorta?
Left 4th aortic arch, left dorsal aorta, aortic sac
Rt 4th aortic arch
Right subclavian artery (w/ rt dorsal aorta and rt 7th intersegmental artery)
What forms right subclavian artery?
Rt 4th aortic arch, rt dorsal aorta, rt 7th intersegmental artery
What forms left subclavian artery?
Lt 7th intersegmental artery
What forms pulmonary trunk?
Aortic arch 6 with truncus arteriosus
Proximal aortic arch 6
Left and right pulmonary arteries
Distal aortic arch 6
Degenerates on right
Left becomes ductus arteriosus