systemic heart

A single systemic heart then pumps the oxygenated blood through the rest of the body.

The systemic heart is made of three chambers, a lower ventricle and two upper auricles.

Cephalopods have two "gill hearts" and one "systemic heart".

Two branchial hearts feed the gills, each surrounding the larger systemic heart that pumps blood around the body.

Branchial hearts are myogenic accessory pumps found in coleoid cephalopods that supplement the action of the main, systemic heart.