Cardiology Quiz #1: Cardiovascular Embryology and Aortic Arch Derivatives

1. A 2-week-old infant presents with difficulty breathing and feeding. Physical examination reveals a machinery-like heart murmur. Imaging studies indicate the presence of a connection between the descending aorta and the pulmonary artery. This congenital heart defect is most directly related to abnormal development of which of the following aortic arch derivatives?

Question 1 of 5

2. During a routine prenatal ultrasound, a fetus is found to have a congenital heart defect characterized by the transposition of the great arteries. This defect is most likely the result of abnormal development of which of the following structures? 

Question 2 of 5

3. A newborn is diagnosed with preductal coarctation of the aorta. This condition is associated with a narrowing located proximal to the ductus arteriosus. The segment of the aorta involved in this condition is derived from which of the following embryonic structures? 

Question 3 of 5

4. An infant presents with a high-pitched continuous murmur best heard at the left upper sternal border. Further evaluation reveals an abnormal blood vessel connecting the aorta directly to the left pulmonary artery. This congenital anomaly is most likely due to the persistence of which embryonic structure? 

Question 4 of 5

5. A 3-year-old child is brought to the physician due to recurrent respiratory infections and difficulty swallowing. Imaging studies reveal an aberrant right subclavian artery originating from a distal aortic arch location. This vascular anomaly is most likely associated with the abnormal development of which of the following aortic arches?

Question 5 of 5


 

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