Ch. 33 Fetal echocardiography

Question 1

area of specialized cardiac muscle that receives the cardiac impulse from the sinoatrial node and conducts it to the atrioventricular bundles

Answer 1

atrioventricular node

Question 2

two leaflets instead of the normal three leaflets with asymmetric cusps

Answer 2

bicuspid aortic valve

Question 3

primitive chamber that forms the right ventricle

Answer 3

bulbus cordis

Question 4

communication between the pulmonary artery and descending aorta that closes after birth

Answer 4

ductus arteriosus

Question 5

also termed fossa ovale; opening between the free edge of the septum secundum and the dorsal wall of the atrium

Answer 5

foramen ovale

Question 6

venous return into the right atrium of the heart along the posterior lateral wall

Answer 6

inferior vena cava

Question 7

filling chamber of the heart

Answer 7

left atrium

Question 8

pumping chamber of the heart

Answer 8

left ventricle

Question 9

main artery that carries blood from the right ventricle to the lungs

Answer 9

main pulmonary artery

Question 10

atrioventricular valve between the left atrium and left ventricle

Answer 10

mitral valve

Question 11

open communication between the pulmonary artery and descending aorta that does not constrict after birth

Answer 11

patent ductus arteriosus

Question 12

four pulmonary veins bring blood from the lungs back into the posterior wall of the left atrium; there are two upper (right and left) and two lower (right and left) pulmonary veins

Answer 12

pulmonary veins

Question 13

filling chamber of the heart

Answer 13

right atrium

Question 14

pumping chamber of the heart that sends blood into the pulmonary artery

Answer 14

right ventricle

Question 15

first part of the atrial septum to grow from the dorsal wall of the primitive atrium; fuses with the endocardial cushions

Answer 15

septum primum

Question 16

grows into the atrium to the right of the septum primum

Answer 16

septum secundum

Question 17

forms in the wall of the sinus venosus near its opening into the right atrium

Answer 17

sinoatrial node

Question 18

vessel receiving venous return from the head and upper extremities into the upper posterior medial wall of the right atrium

Answer 18

superior vena cava

Question 19

atrioventricular valve found between the right atrium and right ventricle

Answer 19

tricuspid valve