Basic Embryology

The fetal heart tube appears by day:

one
seven
fourteen
twenty one

The heart is completely formed by week:

one 
three
seven
five

The heart tube loops:

anateriorly and leftward
anteriorly and rightward
posteriorly and leftward
posteriorly and righward

The looping of the heart tube creates the:

bulbus cordis
truncus arteriosus
conus arteriosus
bulboventricular loop

The junction betweein the primitive ventricle and bulbus cordis is the:

truncus arteriosus
aortic sac
bulboventricular foramen
artrioventricular canal

Blood flow in the heart tube is directed:

anteriorly
posteriorly
cephalad
caudad

Which of the following contributes to the formation of the vena cava, coronary sinus and posterior walls of the right and left atrium?

sinus venosus
atrioventricular canal
bulbus cordis
truncus arteriosus

All of the following are associated with the development of the interatrial septum EXCEPT:

septum primum
septum secumdun
foramen ovale
trabecular septum

Which of the following divides the atrioventricular orifice in the fetal heart?

muscular septum
bulbus cordis
septum primum
endocardial cushions

The primivite ventricle is usually a morphologic:

right ventricle
left ventricle
anterior ventricle
posterior ventricle

Which of the following contributes to the formation of the right ventricle, ventricular outflow tracts, and truncus arteriosus?

septum primum
truncus arteriosus
bulbus cordis
atrioventricular canal

Which of the following contributes to the formation of the aortic and pulmonary trunks:

septum secundum
bulbus cordis
truncus arteriosus
endocardial cushions

The third aortic arch contributes to the formation of the:

interatrial septum
endocardial cushions
ductus arteriosus
internal carotid artery

The fourth aortic arch contributes to the formation of the:

endocardial cushions
bulbus cordis
ductus arteriosus
aortic arch

The sixth aortic arch contributes to the formation of all of the following EXCEPT:

internal carotid artery
right pulmonary artery
left pulmonary artery
ductus arteriosus

The ascending aorta is derived from the:

truncus arteriosus
sinus venosus
aortic sac
fifth arch

Which of the following would be considered a cono-truncal abnormality?

bicuspid arotic valve
tetralogy of Fallot
atrioventricular septal defect
ventricular septal defect

The cardiac tube loops anterior and leftward. This results in:

d-transposition of the great arteries
l-transposition 
mitral stenosis
total anomalous pulmonary venous return

Fetal blood oxygenated occurs in the maternal:

heart
lungs
placenta
aorta

Oxygenated blood returns to the fetal heart via the:

umbilical artery
umbilical vein
maternal placenta
fetal aorta

Which valve directs blood from the inferior vena cava to the foramen ovale in the fetal heart:

tricuspid
mitral
thebesian
eustachian

In the fetal heart, fetal blood at the artial level is shunted right to left via the:

foramen ovale
ductus arteriosus
ligamentum venosum
ductus venosus

The vessel that shunts fetal blood right to left between the pulmonary artery and aorts is the:

foramen ovale
ductus arteriosus
ligamentum venosum
ductus venosus

Deoxygenated blood from the fetal heart returns to the maternal placents via the:

umbilical artery
umbilical vein
maternal placenta
fetal aorta

All of the following are true statement concerning events that occur after birth EXCEPT:

systemic pressure increase
pulmonary vascular resistance increases
right heart pressues decreases
foramen ovale closes

The foramen ovale closes after birht due to an increase in:

right heart pressures
left heart pressures
pulmonary vascular resistance
respirations

The ductus arteriosus closes due to increased:

systemic pressure
venous pressure
respirations
weight

The ductus venosus closes after birth and becomes the:

ligamentum venosum
ligamentum arteriosum
umbilical ligament
fossa ovalis

The umbilical artery after birth become the umiblical:

artery
vein
ligament
venosum

The umbilical vein after birth becomes the ligamentum:

arteriosum
venosum
teres
ovalis

The foramen ovale after birth becomes the:

ligamentum arteriosum
ligamentum venosum
fossa ovalis
ligamentum teres

The ductus arteriosus after birth becomes the:

ligamentum arteriosum
ligamentum venosum
fossa ovalis
ligamentum teres

All of the following are true statments concerning fetal circulation EXCEPT:

fetal right ventricle is thicker then the left
right heart handles a larger volume of blood then left
pulmonary artery branches are underdeveloped at birth
blood enters the systemic circulation only at the ductus arteriosus level