Heart Embryology

Question 1

Truncus arteriosus give rise to :

Answer 1

1. Ascending aorta

2. Pulmonary trunk

Question 2

Bulbus cordis :

Answer 2

Smooth parts (outflow tract) of left + right ventricles

Question 3

Primitive ventricle :

Answer 3

Trabeculated part of left+right ventricles

Question 4

primitive atrium :

Answer 4

trabeculated part of left+right atria

Question 5

Left horn of sinus venosus :

Answer 5

coronary sinus

Question 6

Right horn of sinus venous :

Answer 6

smooth part of right atrium ( Sinus venarum )

Question 7

Endocardial cushion

Answer 7

1. Atrial septum
2. Membranous interventicular septum
3. AV and semilunar valves

Question 8

Right common cardinal vein & right anterior cardinal vein

Answer 8

SVC (Superior vena cava)

Question 9

Posterior & subcardinal & supracardinal veins

Answer 9

IVC (Inferior vena cava)

Question 10

Primitive pulmonary vein

Answer 10

Smooth part of left atrium