Question

What is the first vessel of systemic circulation?

Answer 1

Systemic circulation:

The systemic circulation provides nutrients, ${\mathrm{O}}_2$ and other essential substances to the tissues and takes ${\mathrm{CO}}_2$ and other harmful substances away for elimination.

Aorta:

1. The first vessel of the systemic circulation is Aorta.
2. The oxygenated blood entering the aorta is carried by a network of arteries, arterioles, and capillaries to the tissues from where the deoxygenated blood is collected by a system of venules, veins, and vena cava and emptied into the right atrium.