Circulatory System in Vertebrates (With Diagram) | Chordata | Zoology
In the circulatory system of vertebrates there are two systems of elaborately branching tubes, which ramify throughout the body and carry fluids to the tissues. They are a blood vascular system and a lymphatic system. When the term circulatory system is used, it refers only to the blood vascular system. The blood vascular system is a closed system in vertebrates; [...]