Respiratory System

A hippopotamus respirartory system has a spongy texture and are honeycombed with a type of animal tissue called epithelium having a much larger surface area in total than the outer surface area of the lung itself. This makes there lungs like human lungs. Breathing is driven by the muscular diaphragm. The air enters the oral or nassal cavities then it flows through the larynx, trachea and bronchi and expands the alveoli.