Deck 12: Cardiovascular System

Question 1

________ Derivative of an intersegmental artery

A)A
B)B
C)C
D)D
E)E

Answer 1

C
The left subclavian artery,unlike the right subclavian artery,is not derived from an aortic arch artery or the dorsal aorta.It develops from the seventh intersegmental artery that arises from the descending aorta and moves cranially as the arch of the aorta forms.

Question 2

________ Carries well-oxygenated blood

A)A
B)B
C)C
D)D
E)E

Answer 2

A
The IVC carries well-oxygenated blood from the placenta.This fetal blood returns from the placenta in the umbilical vein.About half the blood passes through the hepatic sinusoids before entering the IVC.The other half is shunted by way of the ductus venosus directly from the umbilical vein to the IVC.

Question 3

________ Ductus venosus

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Answer 3

E
About half the blood coming from the placenta in the umbilical vein is shunted through the liver by way of the ductus venosus into the IVC.The remainder of the blood enters the liver and is carried to the IVC by the hepatic veins.

Question 4

________ Remains of the septum primum

A)A
B)B
C)C
D)D
E)E

Question 5

________ Opening in the septum secundum

A)A
B)B
C)C
D)D
E)E

Question 6

________ Floor of the oval fossa

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 7

________ Formed by fusion of the dorsal aortae

A)A
B)B
C)C
D)D
E)E

Question 8

________ Arterial shunt

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 9

________ Carry relatively little fetal blood

A)A
B)B
C)C
D)D
E)E

Question 10

________ Forms from the sixth pharyngeal arch artery

A)A
B)B
C)C
D)D
E)E

Question 11

________ Carries poorly oxygenated blood into the right atrium

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 12

________ Derived from the third aortic pharyngeal arch artery

A)A
B)B
C)C
D)D
E)E

Question 13

________ Directs blood into the left atrium

A)A
B)B
C)C
D)D
E)E

Question 14

________ Becomes ligamentous during infancy

A)A
B)B
C)C
D)D
E)E

Question 15

________ Right recurrent laryngeal nerve

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 16

________ Round ligament of the liver

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 17

________ Derived from the truncus arteriosus

A)A
B)B
C)C
D)D
E)E

Question 18

________ Septum secundum

A)A
B)B
C)C
D)D
E)E

Question 19

________ Pulmonary valve stenosis

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 20

________ Rubella syndrome

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 21

________ Most common cardiac defect

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 22

________ A cardiac defect in the area of the oval fossa

A)A
B)B
C)C
D)D
E)E

Question 23

________ Right ventricular hypertrophy

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 24

________ Is partly derived from the sinus venosus

A)A
B)B
C)C
D)D
E)E

Question 25

________ Constriction of aorta

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein

Question 26

________ Normally communicates with the right ventricle

A)A
B)B
C)C
D)D
E)E

Question 27

________ Closes by the end of the seventh embryonic week

A)A
B)B
C)C
D)D
E)E

Question 28

________ Is formed from the dorsal aorta

A)A
B)B
C)C
D)D
E)E

Question 29

________ Overriding aorta

A)Ductus arteriosus
B)Septum primum
C)Sixth pharyngeal arch artery
D)Sinus venosus
E)Umbilical vein