Heart Embryology

Question 1

Embryonic structure:
Bulbous Cordis

Gives rise to?

Answer 1

Smooth parts (outflow tract) of left and right ventricles

Question 2

Embryonic structure:
Endocardial cushion

Gives rise to?

Answer 2

Atrial septum

Membranous interventricular septum; AV and semilunar valves

Question 3

Embryonic structure:
Left horn of sinus venosus

Gives rise to?

Answer 3

Coronary Sinus

Question 4

Embryonic structure:
Posterior, subcardinal, and supracardinal veins

Gives rise to?

Answer 4

Inferior vena cava (IVC)

Question 5

Embryonic structure:
Primitive atrium

Gives rise to?

Answer 5

Trabeculated part of left and right atria

Question 6

Embryonic structure:
Primitive pulmonary vein

Gives rise to?

Answer 6

Smooth part of left atrium

Question 7

Embryonic structure:
Right common cardinal vein and right anterior cardinal vein

Gives rise to?

Answer 7

Superior vena cava (SVC)

Question 8

Embryonic structure:
Right horn of sinus venosus

Gives rise to?

Answer 8

Smooth part of right atrium (sinus venarum)

Question 9

Embryonic structure:
Truncus arteriosus

Gives rise to?

Answer 9

Ascending aorta and pulmonary trunk