This document contains 8 multiple choice questions about the development of the cardiovascular system from early embryogenesis. The questions cover topics like the origin of the cardiovascular system, subdivision of the primitive heart tubes, abnormalities that can result from looping and convergence issues, types of atrial septal defects from failures of septum development, and defects from abnormal pulmonary vein incorporation or sinus venosus fusion. Each question is followed by a single letter answer.

1. CTVS Questions MODULE 1
Q. 1.Entire cardiovascular system develop from..
A. Ectoderm
B. Endoderm
C. Mesoderm
D. All
Ans. C
Q. 2. Primitive Heart tubes subdivide into..
A. 21 to 24 days
B. 20 to 22 days
C. 18 to 20 days
D. None
Ans. A

2. Q. 3.Growth factor responsible for early
carcinogenesis.
A. BMP
B. TGF
C. Both
D. None
Ans. A.
Q. 4.Abnormalities of looping and convergence can
result in..
A. Double inlet left ventricle
B. Double outlet right ventricle
C. Both
D. None
Ans. C

3. Q. 5.Which of the following statement is correct..
A. Complete failure of atrial septation result in
development of common atrium
B. Failure of development of upper connecting
brachiocephalic vein results in bilateral SVC
C. Both
D. None
Ans. C
Q. 6.Failure of development of septum primum
results in
A. Secundum defects
B. Primum defects
C. Both
D. None
Ans. A

4. Q. 7.Failure of development of septum primum with
the endocardial cushions result in
A. Secundum ASD
B. Primum ASD
C. CS ASD
D. Sinus venosus ASD
Ans. B
Q. 8.Which of the following statement is correct
A. Defective incorporation of the primitive
pulmonary vein into left atrial wall results in cor
triatriatum
B. Failure of fusion septum Secundum with sinus
venosus results in development of sinus venosus
ASD
C. Both
D. None

5. Ans. C
THANKS
DR ABHISHEK SRIVASTAVA (TRAINEE CARDIAC
SURGEON)