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Cardiovascular system derives from _
Mesoderm
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Formation of the heart starts with formation of paired _ in cephalic region of embryo
Endocardial tubes
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Truncus arteriosus forms _
Proximal aorta and proximal pulmonary artery
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Bulbus cordis forms _
Smooth parts of right ventricle (conus arteriosus) and left ventricles
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Primitive ventricle forms_
Right and left ventricles
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Prmitive atrium forms _
Right and left atria
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Sinus venosus forms _
Smooth part of right atrium, coronary sinus and oblique vein
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Aberrant development of aorticopulmonary septum is responsible for _
Tetralogy of Fallot
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Most common type of atrial septal defect
Patent foramen ovale
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The lumen of truncus arteriosus and bulbus cordis is divided into aorta and pulmonary trunk by _
Aorticopulmonary septum
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Septum primum, septum secundum and AV cushion form _
Atrial septum
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Communication between right and left atria that is formed by the walls of septum primum and septum secundum
Foramen ovale
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Allows blood to flow from venous side of circulation to arterial without
passing through the lungs as result of higher pressure on venous side
during gestation
Foramen ovale
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Why does foramen ovale close after birth
Because of increased arterial pressure which pushes spetum primum against atrial septum
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Aorticopulmonary septum, right and left bulbar ridges and AV cushion form _
Interventricular septum
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This arch helps forming adult common carotid arteries bilaterally
Arch 3
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This arch helps forming AORTA on the left and proximal subclavian artery on the right
Arch 4
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This arch helps to form DUCTUS ARTERIOSUS and part of PULMONARY TRUNK
Arch 6
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One of the only places in the body (along with pulmonary circulation) where an ARTERY DOES NOT CARRY OXYGENATED BLOOD
- UMBILICAL CIRCULATION - paired umbilical arteries carry deoxygenated
- blood to the placenta while UMBILICAL VEIN brings oxygenated blood back
- to the fetus
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_ vein gives rise to ligamentum teres hepatis
Left umbilical vein
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_ veins help form internal jugular vein and superior vena cava
Anterior cardinal veins
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_ veins help form inferior vena cava, common iliac veins, azygos vein, and renal veins
Posterior cardinal veins
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_ veins help form ductus venosus and hepatic sinusoids, inferior vena cava, portal vein, superior and inferior mesenteric veins
Vitelline veins
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