The Respiratory System of a Small Mammal
The respiratory apparatus of other mammals is similar to humans in both structure and function. The lungs fill the cavity of the chest, and have the same general composition of lobes, lobules and air-cells. Labels: 1, Trachea. 2, Lungs. 3, Heart. 4, Diaphragm. 5, Liver. 6, Stomach. 7, Esophagus. 8, Kidney. 9, Intestines. 10, Bladder. 11, Cerebrum. 12, Cerebellum. 13, Medulla spinalis. 14, Vertebrae.