How many circuits do a alligator have?

Answer 1

Alligators have a unique cardiovascular system that includes four chambers in their hearts, similar to birds and mammals. However, they also possess a special structure called the foramen of Panizza, which connects the left and right aortic arches, allowing for a degree of mixing between oxygenated and deoxygenated blood. This adaptation helps them manage their oxygen levels while submerged. Overall, they have two primary circuits: the pulmonary circuit for oxygenation in the lungs and the systemic circuit for supplying oxygenated blood to the body.