The document summarizes the arterial system and circulation of frogs. It describes that frogs have a three-chambered heart with two atria and one ventricle, unlike the four-chambered hearts of mammals. Blood flows through two circuits - pulmonary circulation to the lungs and systemic circulation to the rest of the body. Major arteries include the carotid, systemic, and pulmonary arches that distribute blood from the heart. Deoxygenated blood is pumped to the lungs via the pulmonary artery and oxygenated blood is circulated throughout the body.