QuestionSBA
QuestionChoice
This is incorrect. The right atrium connects to the right ventricle through the tricuspid valve. By contrast, the ductus arteriosus is a foetal blood vessel that connects the pulmonary artery to the aorta.
10026131
b
The ductus arteriosus connects the right atrium to the right ventricle
QuestionChoice
This is incorrect. The left atrium connects to the left ventricle through the mitral (bicuspid) valve. By contrast, the ductus arteriosus is a foetal blood vessel that connects the pulmonary artery to the aorta.
10026132
c
The ductus arteriosus connects the left atrium to the left ventricle
QuestionChoice
This is incorrect. The pulmonary veins carry oxygenated blood from the lungs to the left atrium. By contrast, the ductus arteriosus is a foetal blood vessel that connects the pulmonary artery to the aorta.
10026134
e
The ductus arteriosus connects the pulmonary vein to the left atrium
QuestionChoice
This is incorrect. The connection between the aorta and the superior vena cava is not primarily associated with the ductus arteriosus. The ductus arteriosus is a foetal blood vessel that connects the pulmonary artery to the aorta.
10026133
d
The ductus arteriosus connects the aorta to the superior vena cava
QuestionChoice
This is correct. The ductus arteriosus is a foetal blood vessel that connects the pulmonary artery to the aorta. It allows a portion of the blood to bypass the lungs in the foetal circulation, as the lungs are not yet functional in the uterus.
10026130
a
The ductus arteriosus connects the pulmonary artery to the aorta
Concept
Chapter
2693
3867
Foetal Circulation
Topic
159
Cardiovascular physiology
17624
A 2 week old baby boy is brought to the paediatric emergency department when his parents noticed that he was breathing more rapidly than usual. They note poor feeding since birth, and failure to gain weight.

Upon examination, a continuous heart murmur is heard, it is loudest over the left upper chest area. A clinical diagnosis of a patent ductus arteriosus is made.

Which of the following statements correctly describes the path of the ductus arteriosus in the foetal circulation?
a