Great Vessels Embryo Flashcards
(19 cards)
1st Aortic Arch Derivatives
External Carotid and Maxillary As.
2nd Aortic Arch Derivatives
Stapedial As.
Aortic Sac Derivatives
Brachiocephalic A. and Base of Aortic Arch
3rd Aortic Arch Derivatives
Common Carotid and Internal Carotid
4th Aortic Arch Derivatives
Left: Medial Aortic Arch
Right: Proximal Right Subclavian A.
6th Aortic Arch Derivatives
Right: Right Pulmonary A.
Left: Left Pulmonary A. and Ductus Arteriosus
7th Intersegmental Arteries Derivatives
Right: Distal Right Subclavian A.
Left: Left Subclavian A.
Dorsal Aorta Derivatives
Right: Right Subclavian A.
Left: Descending Aorta (fusion with Rt DA)
Aortic Coarctation Mechanism
Restriction of aorta by smooth muscle constriction or abnormal remodeling
Double Aortic Arch Mechanism
Persisting right dorsal aorta forms a ring around trachea/esophagus
Interrupted Aortic Arch Mechanism
Right and Left 4th aortic arch derivatives obliterated
Right dorsal aorta stays
Abnormal Right Subclavian Artery Mechanism
Only made by Right Dorsal Aorta and 7th Intersegmental As.
Artery passes behind esophagus/trachea
Right Aortic Arch Mechanism
Obliterated Left 4th aortic arch and Left Dorsal Aorta replaced by right side
Ligamentum Arteriosum can cause swallowing issues
Vitelline Vein Derivatives
Veins near heart degenerate
Near Liver
Right: Hepatic V.
Left and Right: Portal V.
Umbilical Vein Derivatives
Right degenerates
Left anastomoses with Ductus Venosus
Cardinal Vein Derivatives
Right Anterior: Internal Jugular and Superior Vena Cava
Left Anterior: Left Brachiocephalic V.
Posterior replaced by Subcardinal and Supracardinal Vs.
Inferior Vena Cava Creation
Hepatic: Right Vitelline and Hepatic Vs.
Prerenal: Right Subcardinal V.
Renal: Subcardinal-Supracardinal Anastomosis
Postrenal: Right Supracardinal V.
Postcardinal Vein Derivatives
Proximal Azygos V.
Supracardinal Vein Derivatives
Distal Azygos V
Hemiazygos V.
