Tissue - Alveoli

        Eastern Black Rhino - Circulatory Organ - Tissue - Alveoli

                    Functions:
                                  - Oxygen exchange through inflation and deflation

                    Major cell types: 

                                  -  Pneumocytes (Type I and II)

                   

                     Fun Fact: 

                                  - Millions of alveoli are on each of the lungs (they look like clusters of grapes)