Circulatory System
Sharks have a two-chambered heart, with an atrium and a ventricle. The heart is S-shaped and is located in the head region of the shark.
The blood is pumped by the heart through the afferent branchial arteries to capillaries in the gills (where the blood is oxygenated). The blood then flows through efferent branchial arteries ), then through the tissues of the body, and then back to heart in veins.
Gills are one of the most unique features of the Bull shark. It is they're gills that prove to be their most distinct feature. They're gills also take part in substance exchange throughout the shark. Gills are also what help sharks (or any aquatic animal) to live and "breathe" underwater.
Cold Blooded vs. Hot Blooded:
Most sharks are cold-blooded. Some, like the Great white shark, are partially warm-blooded. These sharks can raise their temperature about the temperature of the water; they need to have occasional short bursts of speed in hunting. The Bull shark however, is a cold blooded animal and shark.
The blood is pumped by the heart through the afferent branchial arteries to capillaries in the gills (where the blood is oxygenated). The blood then flows through efferent branchial arteries ), then through the tissues of the body, and then back to heart in veins.
Gills are one of the most unique features of the Bull shark. It is they're gills that prove to be their most distinct feature. They're gills also take part in substance exchange throughout the shark. Gills are also what help sharks (or any aquatic animal) to live and "breathe" underwater.
Cold Blooded vs. Hot Blooded:
Most sharks are cold-blooded. Some, like the Great white shark, are partially warm-blooded. These sharks can raise their temperature about the temperature of the water; they need to have occasional short bursts of speed in hunting. The Bull shark however, is a cold blooded animal and shark.