CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 - 2026
During D-looping, the primitive atria and sinus venosus moves ____________
- ANSWERS-superior and posterior
At 21-23 days, the heart tube is connected to the _______ at the cephalic end
and the _______ at the caudal end of the embryo
a) primitive atrium/primitive ventricle
b) bulbus cordis/sinus venosus
c) pharyngeal arch arteries/sinus venosus
d) sinus venosus/truncus arteriosus - ANSWERS-c) pharyngeal arch
arteries/sinus venosus
The fetal heart tube fuses and merges by day ____
a) one
,b) seven
c) fourteen
d) twenty one - ANSWERS-d) twenty one
The primitive ventricle is usually a morphologic
a) right ventricle
b) left ventricle
c) septum primum
d) endocardial cushions - ANSWERS-b) left ventricle
During atrial septation, perforations develop deptum primum resulting in
a) ostium primum
b) foramen ovale
c) bulbar ventricular formen
d) foramen secundum - ANSWERS-d) foramen secundum
Which one of the following is not a type of anatomic ASD?
a) perimembranous
b) osium primum
c) unroofed coronary sinus
d) sinus venosus - ANSWERS-a) perimembranous
In a normal fetal heart, which cardiac chamber is the most superior?
a) SVC
b) aorta
,c) mitral valve
d) main pulmonary artery - ANSWERS-aorta
What is the name given for normal situs?
a) ambiguous
b) inversus
c) solitus
d) concordance - ANSWERS-c) solitus
What structures form the ductal arch? - ANSWERS-Descending aorta, ductus
artenosus, left pulmonary artery
True/False: In the three vessel trachea view, all of the vessels should be the
same size - ANSWERS-False
How large is the aortic arch compared to the ascending and descending
aorta?
a) about the same size
b) 1/3 larger
c) 1/3 smaller
d) 1/2 smaller - ANSWERS-a) about the same size
What is the normal cardiothoracic ratio?
a) 1/4
b) 1/3
c) 2/3
, d) 3/4 - ANSWERS-b) 1/3
Which embryoni structure is NOT correctly marched with its postnatal
derivative?
a) umbilical artery - medial umbilical ligament
b) ductus venosus - ligamentum venosum
c) ductus arteriosus - ligamentum teres
d) foramen ovale - fossa ovalis - ANSWERS-c) ductus arteriosus - ligamentum
teres
The first step in echo fetal is to determine
a) fetal position
b) abdominal situs
c) morphology of the chambers
d) fetal heart rate - ANSWERS-a) fetal position
What are the indications for a fetal echocardiogram
a) family history of CHD
b) irregular heart rhythm
c) tetrogens/genetic abnormality
d) multiple gestation
e) all of the above - ANSWERS-e) all of the above
Oxygenated blood flows to the fetal heart via the
a) umbilical artery
b) umbilical vein