Botany and Zoology questions! : Solution Essays
Home>Biology homework help The circulatory system of an amphibian is divided into two separate loops. The pulmonary circulation carries deoxygenated blood from the heart to the lungs and back to the heart. The systemic circulation carries oxygenated blood from the heart to the body and back to the heart. The three-chambered heart of an amphibian reflects the division of the circulatory system into pulmonary and […]