Development of the Circulatory System Flashcards
Fate of Umbilical Vein (Left)
Ligamentum Teres
Fate of Umbilical Vein (Right)
Regresses and Nonfunctional
Fate of Umbilical Arteries
- Superior Vesicular Arteries
2. Medial Umbilical Ligaments
Fate of Ductus Venosus
Ligamentum Venosum
Fate of Ductus Arteriosus
Ligamentum Arteriosum
Fate of Foramen Ovale
Fossa Ovalis (in the Interatrial Septum)
Day of Regression of AA I, II, V
49th Day
Fate of Aortic Arch I
- Regresses/Degenerates
2. Small Portion in Maxillary Artery
Fate of Aortic Arch II
- Regresses/Degenerates
2. Small Portion in Maxillary Artery
Fate of Aortic Arch III
- Common Carotid Artery
2. Proximal Parts of Internal and External Carotid Arteries
Fate of Aortic Arch IV (Left)
Arch of the Aorta
Fate of Aortic Arch IV (Right)
Root of Right Subclavian Artery
Fate of Aortic Arch V
- Regresses/Degenerates
2. Rudiment Still Present
Fate of Dorsal Aortic Root
Internal and External Carotid Arteries
Fate of Ventral Aortic Root
Common Carotid Artery
What contributes to the formation of the Common Carotid Artery?
- Aortic Arch III
2. Ventral Aortic Root
What contributes to the formation of the Internal and External Carotid Arteries?
- Roots/Proximal: Aortic Arch III
2. Distal: Doral Aortic Root
Fate of Aortic Arch VI (Left)
Ductus Arteriosus
Fate of Aortic Arch VI (Right)
Proximal Part of Pulmonary Artery
How does the Common Cardinal Vein form?
Fusion of Anterior and Posterior Cardinal Veins at the Level of the Heart
Where can the Subcardinal Vein be found?
Middle of the Mesonephros
When does the Supracardinal Vein start forming?
When the Subcardinal Vein is Regressing
What does the Anterior Cardinal Vein lead to?
- Internal Jugular Veins
- Oblique Veins
- Superior Vena Cava
What does the Posterior Cardinal Vein lead to?
- Portion of the Inferior Vena Cava
2. Iliac Vein
What does the Subcardinal Vein lead to?
- Inferior Vena Cava
- Renal Veins
- Gonadal Veins
Where can the Supracardinal Vein be found?
Dorsolateral to Aorta
What is does the Right Supracardinal Vein lead to?
Inferior Vena Cava
What contributes to the formation of the Inferior Vena Cava?
- Right Vitelline Vein
- Posterior Cardinal Vein
- Subcardinal Vein
- Supracardinal Vein
What does the Endocardial Cushion/Cardiac Jelly do?
Induce Endothelial (Squamous) to Mesenchyme (Stellate)
How does the Septum Primum develop?
Grow Downward from Cranial Wall of Left Atrium
How does the Foramen Primum develop?
Septum Primum Ceases Growth and Has a Free Edge
How does the Foramen Secundum develop?
Small Openings of the Septum Primum Coalesce in its Center
How does the Septum Secundum develop?
Grows to the Right of Septum Primum, Diagonally
How does the Foramen Ovale develop?
Septum Secundum Ceases Growth and Has Free Edges
How does the Atrial Septum develop?
Fusion of Septum Primum and Septum Secundum
How does Foramen Primum disappear?
Fusion of Septum Primum with Endocardial Cushion
How does Interventricular Foramen develop?
Upward Growth from Floor of Ventricle
How does the Interventricular Foramen disappear?
Fusion with Endocardial Cushion
How does the Atrioventricular Septum develop?
Fusion of Dorsal and Ventral AV Cushions
What does the AV Septum separate?
Right and Left AV Canals
What does the right side of the atrial canal become?
Tricuspid Valve
What does the left side of the atrial canal become?
Bicuspid Valve
How does the Spiral Septum form?
- Truncobulbar Ridges bulge into the lumen of the truncus arteriosus
- NCC invade
Two channel brought about by formation fo spiral septum
- Pulmonary Artery
2. Aortic Arches
