Sinus Venosus- Pumps blood.
Atrium- Pumps blood into the main pumping chamber.
Ventricle- Collects blood that is pumped from the atrium.
Conus Arteriosus- Where the pulmonary artery originates.
Visceral Pericardium- It separates circulatory system from the digestive systems .
Caudal Artery- The part of the dorsal aorta of a vertebrate that passes into the tail.
Caudal Vein- Takes the blood to the heart.