What is the circulatory system of a diamondback terrapin?

The circulatory system of a diamondback terrapin, like other reptiles, is primarily composed of a three-chambered heart, which consists of two atria and one ventricle. This structure allows for some mixing of oxygenated and deoxygenated blood, although the presence of a partial septum helps to reduce this mixing. The system includes a network of arteries and veins that transport blood throughout the body, supplying oxygen and nutrients to tissues while removing waste products. Overall, the circulatory system is adapted to support the terrapin's semi-aquatic lifestyle.