QUESTIONS EXAM NEWEST ACTUAL
EXAM 2024\2025 COMPLETE 500
QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+
At what time during fetal growth is the heart first fully developed?
a) 20 days
b) 30 days
c) 40 days
d) 50 days
- Correct Answer- 40 days
On the 30th day, the truncus normally divides. What anomaly occurs
if the truncus does not divide?
a) A-V canal
b) muscular VSD
c) transposition of the great vessels
d) truncus arteriosus
- Correct Answer- truncus arteriosus
The sinus venous forms all of the following EXCEPT:
a) coronary sinus
,b) pulmonary arteries
c) right atrium
d) inferior vena cava
- Correct Answer- pulmonary arteries
The trunks arterioles forms all of the following EXCEPT:
a) pulmonary veins
b) carotid artery
c) pulmonary arteries
d) ductus arteriosus
- Correct Answer- pulmonary veins
What are the two right-to-left shunts in the normal fetal circulation?
a) ductus arterioles and primum ASD
b) VSD and ASD
c) foramen ovale and ductus arteriosus
d) foramen ovale and VSD
- Correct Answer- foramen ovale and ductus arteriosus
Which of the following left-to-right shunts is the last to close in the
normal post-partum period? When does it close?
a) patent ductus arteriosus, closes in the 7th day
b) patent foramen ovale, closes in the 2nd day
c) patent ductus arteriosus, closes in the 14th day
d) patent foramen ovale, close at the end of the first week
,- Correct Answer- patent foramen ovale, close at the end of the first
week
In the normal fetal circulation, which of the following has the least
amount of the flood flow?
a) patent foramen ovale
b) ductus arteriosus
c) aorta
d) pulmonary veins
- Correct Answer- pulmonary veins
All of the following hemodynamic events occur post-delivery
EXCEPT:
a) pulmonary artery blood flow increases
b) left atrial pressure decreases
c) pulmonary resistance decreases
d) foramen ovale flow decreases
- Correct Answer- left atrial pressure decreases
The fetal ductus arteriosus closes soon after birth? What structure
does it become?
a) coronary sinus
b) chiari network
c) eustachian valve
d) ligamentum arteriosum
- Correct Answer- ligamentum arteriosum
, The ductus arteriosus connects the pulmonary artery and aorta in the
fetus. At what site does the ductus attach to the aorta?
a) aortic isthmus
b) aortic root
c) sinus of Valsalva
d) A-V node
- Correct Answer- aortic isthmus
The following five structures are activated during a single cardiac
cycle. Rank them in the normal order of activation:
a) Bundle of His
b) Purkinje fibers
c) AV node
d) SA node
e) Left bundle branch
- Correct Answer- 1) SA node
2) AV node
3) Bundle of His
4) Left bundle branch
5) Purkinje fibers
Which of the following structures is the primary pacemaker of the
heart?
a) Bundle of His