Development of cardiovascular system

The cardiovascular system takes origin completely from differentiating mesenchyme or mesoderm. The origin of the whole of the cardiovascular system is from an undifferentiated cells called the haemocytoblast. This cell will develop into 2 types of cell forming corpuscles of blood and cells forming blood vessels.

Before this a cardiogenic area has been delineated, initially at the anterior pole of the embryo. But after the head folding of the embryo, the cardiogenic areas becomes placed between the stomatodeum and the developing yolk sac. This region is therefore incorporated with the developing intra-embryonic coelom.

The system develops into

• Early vessels

• Atria

• Ventricles

• Bulbus cordis

• Arteries

• Veins

© Oluwole Ogunranti