Paraxial mesoderm
Somatic mesoderm
Intermediate mesoderm
Splanchnic mesoderm
Somitic mesoderm
Left atrium
Left ventricle
Right atrium
Right ventricle
Common ventricle
The aorticopulmonary septum partitions the outflow channel of the ventricles into the aorta and the pulmonary trunk
The aorticopulmonary septum is largely derived from neural crest cells
The aorticopulmonary septum contributes to the formation of the muscular interventricular septum
The aorticopulmonary septum contributes to the formation of the membranous interventricular septum
The aorticopulmonary septum undergoes a 180o spiral
Persistent truncus arteriosus
Transposition of the great vessels
Tetralogy of Fallot
Ventricular septal defect (VSD)
Atrial-septal defect (ASD)
Bulbus cordis
Primitive atrium
Primitive ventricle
Sinus venosus
Truncus arteriosus
Ventrally, inferiorly and to the right
Posteriorly and superiorly
Ventrally and superiorly
Posteriorly and inferiorly
Ventrally, inferiorly and to the left.
Coronary sinus
Inferior vena cava
Oblique vein of the right atrium
Main inflow of the right atrium
Left sinus horn, there is no change
Formed from the right auricle
The trabeculated part of the right atrium.
Formed from tissue of the right sinus horn
Formed from the pulmonary veins.
A ridge of tissue between the original atrial wall tissue and the smooth part of the atrium
The septum primum is thick and muscular
The septum secundum is a transient structure which degenerates by the end of the fourth week
The ostium secundum forms by apoptosis in the central part of the septum secundum
The septum primum forms the valve of the oval foramen
The ostium primum is a common atrial-septal defect
True
False
The aorticopulmonary septum undergoes a 180-degree spiral
The aorticopulmonary septum is formed by fusion of conal and truncal septa
The aorticopulmonary septum partitions the aorta and the pulmonary trunk
The aorticopulmonary septum develops from splanchnic mesoderm
The aorticopulmonary septum contributes to the interventricular septum
Tetralogy of Fallot
Transposition of the great vessels
Persistent truncus arteriosus
An atrial-septal defect
Pulmonary stenosis
The atrioventricular valves develop from mesenchyme derived from neural crest cells
The papillary muscles attached to the atrioventricular valves are formed from mounds of tissue called endoventricular cushions
Molding of the atrioventricular valves is caused by the normal turbulent flow of blood through the ventricles
The atrioventricular valve leaflets are derived from atrial wall tissue which invaginates into the atrioventricular canals
The atrioventricular valves form before the ventricles to provide a skeleton framework for each developing ventricle
Right sinus horn
Endocardial cushion
Neural crest cells
Muscular interventricular septum
Bulbar ridge
At the end of the third week
During the tenth week once the heart is fully formed
At the end of the fourth week after looping
In the fetal period when the primitive organs mature
Immediately after birth when the baby takes the first breath
Truncus arteriosus
Sinus venosus
Primitive ventricle
Conus cordis
Primitive atrium
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