Podcast
Questions and Answers
What structure forms from the union of the cardinal, vitelline, and umbilical veins?
What structure forms from the union of the cardinal, vitelline, and umbilical veins?
The apical portion of the right ventricle is formed from which of the following?
The apical portion of the right ventricle is formed from which of the following?
Which of the following is NOT derived from the sinus venosus?
Which of the following is NOT derived from the sinus venosus?
During which week of development do the heart tubes fuse into a single endocardial heart tube?
During which week of development do the heart tubes fuse into a single endocardial heart tube?
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What does the left 4th aortic arch form?
What does the left 4th aortic arch form?
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Which structure directly connects the primitive atrium with the left ventricle during early cardiac development?
Which structure directly connects the primitive atrium with the left ventricle during early cardiac development?
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What is the primary role of the septum secundum in atrial development?
What is the primary role of the septum secundum in atrial development?
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The cessation of growth of the trabecular interventricular septum occurs when?
The cessation of growth of the trabecular interventricular septum occurs when?
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What is the significance of the atrioventricular canal shift during cardiac development?
What is the significance of the atrioventricular canal shift during cardiac development?
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Which of the following is a temporary opening between the ventricles during cardiac development?
Which of the following is a temporary opening between the ventricles during cardiac development?
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What is the correct sequence of initial heart development steps?
What is the correct sequence of initial heart development steps?
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What structure develops directly from the atrioventricular canal after the formation of endocardial cushions?
What structure develops directly from the atrioventricular canal after the formation of endocardial cushions?
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What is the primary precursor for the aorta and pulmonary artery during heart development?
What is the primary precursor for the aorta and pulmonary artery during heart development?
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Which of the following describes the role of septum primum?
Which of the following describes the role of septum primum?
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During week 4 of heart development, what connects the sinus venosus to the primitive atrium?
During week 4 of heart development, what connects the sinus venosus to the primitive atrium?
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Which structure appears as a small ridge on the primitive ventricle?
Which structure appears as a small ridge on the primitive ventricle?
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What best describes the developmental progression of the ventricles during week 4?
What best describes the developmental progression of the ventricles during week 4?
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In the developing heart, where are the endocardial cushions located?
In the developing heart, where are the endocardial cushions located?
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What is the primary role of the septum primum during week 5 of cardiac development?
What is the primary role of the septum primum during week 5 of cardiac development?
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What happens to the sinoatrial orifice during week 5 of heart development?
What happens to the sinoatrial orifice during week 5 of heart development?
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Where does the ostium secundum form during week 5 of cardiac development?
Where does the ostium secundum form during week 5 of cardiac development?
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Which structure contributes to the formation of both the right and left ventricular outflow tracts?
Which structure contributes to the formation of both the right and left ventricular outflow tracts?
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What structure is located at the base of the sinoatrial orifice?
What structure is located at the base of the sinoatrial orifice?
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What is the external demarcation between the developing right and left ventricles during week 5?
What is the external demarcation between the developing right and left ventricles during week 5?
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Which of these structures does NOT directly contribute to the formation of the right ventricle?
Which of these structures does NOT directly contribute to the formation of the right ventricle?
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What is the fate of the left venous valve and septum spurium during week 5?
What is the fate of the left venous valve and septum spurium during week 5?
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What structure acts as a flap controlling blood flow between the atria during fetal development?
What structure acts as a flap controlling blood flow between the atria during fetal development?
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What physiological change causes the foramen ovale to close at birth?
What physiological change causes the foramen ovale to close at birth?
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The membranous septum plays a critical role in which process?
The membranous septum plays a critical role in which process?
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What is the origin of the cusps of the aortic and pulmonic valves?
What is the origin of the cusps of the aortic and pulmonic valves?
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By the end of the 7th week of development, what major milestone is achieved in heart development?
By the end of the 7th week of development, what major milestone is achieved in heart development?
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In fetal circulation, which vessel carries the most oxygen-rich blood?
In fetal circulation, which vessel carries the most oxygen-rich blood?
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What is the primary reason that blood bypasses the fetal lungs?
What is the primary reason that blood bypasses the fetal lungs?
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Which shunt moves blood from the right atrium to the left atrium in the fetus?
Which shunt moves blood from the right atrium to the left atrium in the fetus?
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What is the role of the placenta in fetal circulation?
What is the role of the placenta in fetal circulation?
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In fetal circulation, which vessel does the ductus arteriosus directly connect to?
In fetal circulation, which vessel does the ductus arteriosus directly connect to?
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In a fetus, what is the typical pressure relationship between the right (R) and left (L) sides of the heart?
In a fetus, what is the typical pressure relationship between the right (R) and left (L) sides of the heart?
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What is the primary function of the ductus venosus in the fetus?
What is the primary function of the ductus venosus in the fetus?
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What is the approximate oxygen saturation on the right side of the heart at birth?
What is the approximate oxygen saturation on the right side of the heart at birth?
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When does the ductus arteriosus typically close in a newborn?
When does the ductus arteriosus typically close in a newborn?
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What is the primary function of the Eustachian valve in fetal circulation?
What is the primary function of the Eustachian valve in fetal circulation?
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What is the remnant of the ductus venosus in an adult?
What is the remnant of the ductus venosus in an adult?
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Which pathway does the majority of blood take as it exits the right ventricle in fetal circulation?
Which pathway does the majority of blood take as it exits the right ventricle in fetal circulation?
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What causes the closure of the umbilical arteries shortly after birth?
What causes the closure of the umbilical arteries shortly after birth?
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What is the effect of the newborns first breath on fetal circulation?
What is the effect of the newborns first breath on fetal circulation?
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What is the immediate cause of the interruption of blood flow through the placenta at birth?
What is the immediate cause of the interruption of blood flow through the placenta at birth?
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In fetal circulation, where does depleted blood from the upper body enter the heart?
In fetal circulation, where does depleted blood from the upper body enter the heart?
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