Circulatory System
They have a closed circulatory system. The blood is bumped through a singular loop throughout the body. Sharks have a two-chambered heart, with an atrium and a ventricle. The heart is an S-shaped tube that is located in the head region of the shark.
The blood is pumped by the heart through the afferent branchial arteries (ventral aorta) to capillaries in the gills (where the blood is oxygenated). The blood then flows through the branchial arteries (paired dorsal aorta), then through the tissues of the body, and then back to heart in veins
The blood is pumped by the heart through the afferent branchial arteries (ventral aorta) to capillaries in the gills (where the blood is oxygenated). The blood then flows through the branchial arteries (paired dorsal aorta), then through the tissues of the body, and then back to heart in veins