Arizona Bark Spider (Centruroides sculpturatus)
The Arizona bark spider (Centruroides sculpturatus) is located in the southwest United States region. These scorpions are predators that consume insects, spiders, and other invertebrates. Their body prefers to stay in moist and cool temperatures and can be found in crevices. This spider started to evolve during the Cambrian period.
Like the American house spider, it also has an open circulatory system. Its blood is pumped by the heart into body cavities. In these cavities are tissues of the scorpions that contain oxygen rich in blood. The body of the scorpion uses hemocyanin to transport blood instead of hemoglobin, since it is an invertebrate. Hemocyanin is not attached to any of the body cells and flows freely in the vessels. The scorpion also uses the open cardiovascular system to carry waste products to the excretory system.
Like the American house spider, it also has an open circulatory system. Its blood is pumped by the heart into body cavities. In these cavities are tissues of the scorpions that contain oxygen rich in blood. The body of the scorpion uses hemocyanin to transport blood instead of hemoglobin, since it is an invertebrate. Hemocyanin is not attached to any of the body cells and flows freely in the vessels. The scorpion also uses the open cardiovascular system to carry waste products to the excretory system.