Test Bank for Human Embryology and Developmental Biology 6th Edition Carlson
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Multiple Choice
1. In an infant with tricuspid atresia, which of the accompanying secondary anomalies would also have to be present to be compatible with life?
A. Interventricular septal defect
B. Patent ductus arteriosus
C. Interventricular septal defect + patent ductus arteriosus
D. Interventricular septa defect + interatrial septal defect
E. Interventricular septal defect + persistent truncus arteriosus
ANS: D
2. For which of the following cardiovascular malformations is a patent ductus arteriosus necessary for survival of the individual?
A. Atrial septal defect
B. Ventricular septal defect
C. Double aortic arch
D. Right subclavian artery from arch of aorta
E. None of the above
ANS: E
3. In a 7-month fetus, blood draining the left temporalis muscle enters the heart via the ______________.
A. Left anterior cardinal vein
B. Coronary sinus
C. Left common cardinal vein
D. Superior vena cava
E. None of the above
ANS: D
4. Adherons are inductive particles released by the
of the endocardial cushion area.
A. Endocardium
B. Cardiac jelly
C. Myocardium
D. Epicardium
E. None of the above
ANS: C
5. The vitelline veins form what structure in the adult?
A. Ductus venosus
B. Portal vein
C. Ligamentum teres
D. Coronary sinus
E. None of the above
ANS: B
6. The neural crest contributes to the structure of which of the following:
A. Truncus arteriosus
B. Ascending aorta
C. Pulmonary trunk
D. All of the above
E. None of the above
ANS: D
7. Which of the following pairings is incorrect?
A. Umbilical vein – urachus
B. Umbilical artery – lateral umbilical ligament
C. Neural crest – truncoconal ridges
D. Vitelline veins – hepatic portal vein
E. Right fourth aortic arch – proximal part of right subclavian artery
ANS: A
8. Massive collateral circulatory channels are opened up in individuals having which anomaly?
A. Patent ductus arteriosus
B. Preductal coarctation of the aorta
C. Double aortic arch
D. Right aortic arch
E. Postductal coarctation of the aorta
ANS: E
Copyright © 2014 by Saunders, an imprint of Elsevier Inc.
9. Tissue from the sinus venosus becomes absorbed into the ____________.
A. Pulmonary veins
B. Ductus venosus
C. Left atrioventricular valve
D. Wall of right atrium
E. Thoracic duct
ANS: D
10. Nucleated erythrocytes found in the embryo are produced in the _____________.
A. Yolk sac
B. Para-aortic clusters
C. Liver
D. Bone marrow
E. None of the above
ANS: A
11. The myocardial primordium arises from the _____________.
A. Neural crest
B. Endoderm
C. Splanchnic mesoderm
D. Somatic mesoderm
E. Somitic mesoderm
ANS: C
12. Which of the following cardiac malformations requires the presence of a secondary defect to be compatible with life?
A. Interatrial septal defect
B. Interventricular septal defect
C. Patent ductus arteriosus
D. Tricuspid atresia
E. None of the above
ANS: D
13. In order to be compatible with postnatal life, tricuspid atresia would have to be accompanied by ______________.
A. Common truncus arteriosus + patent ductus arteriosus
B. Ventricular septal defect + common truncus arteriosus
C. Atrial septal defect + patent ductus arteriosus
D. Any of the above
E. None of the above
ANS: D
Copyright © 2014 by Saunders, an imprint of Elsevier Inc.
14. The ventral aortic root cephalic to the third aortic arch becomes the ___________.
A. External carotid artery
B. Stapedial artery
C. Ascending aorta
D. Internal carotid artery
E. Ductus arteriosus
ANS: A
15. The internal carotid artery arises from aortic arch ________.
A. 1
B. 2
C. 3
D. 4
E. 6
ANS: C
16. Which defect can be related to the neural crest?
A. Patent ductus arteriosus
B. Persistent truncus arteriosus
C. Atrial septal defect
D. Anomalous pulmonary return
E. None of the above
ANS: B
17. Neural crest–derived cells constitute much of the ________________.
A. Ductus arteriosus
B. Interventricular septum
C. Interatrial septum
D. Truncoconal ridges
E. Conducting system of the heart
ANS: D
18. Embryonic hematopoiesis takes place in all of the organs except the ______________.
A. Liver
B. Yolk sac
C. Bone marrow
D. Placenta
E. All of the above are correct
ANS: E
Copyright © 2014 by Saunders, an imprint of Elsevier Inc.
19. Cells of the secondary heart field contribute to the formation of all except the _____________.
A. Right ventricle
B. Right atrium
C. Outflow
D. Tract
E. Left atrium
F. All of the above are correct
ANS: E
Copyright © 2014 by Saunders, an imprint of Elsevier Inc.