How are reptiles lung is different from a humans lungs?

Reptile lungs are generally simpler in structure compared to human lungs. While humans have a complex, branching system of alveoli that enables efficient gas exchange, reptiles typically possess a more sac-like lung structure with fewer internal divisions. Additionally, many reptiles can utilize a unique method of lung ventilation, relying on muscular contractions of the body wall to expand and contract their lungs, as opposed to the diaphragm mechanism used by humans. This difference reflects their varied respiratory needs and evolutionary adaptations.