User:Crisel roxas

RESPIRATORY SYSTEM                                  --Crisel roxas (talk) 01:55, 9 October 2012 (UTC)Respiration-removal of co2 and taking in oxygen. --Crisel roxas (talk) 01:55, 9 October 2012 (UTC) 2 kinds of process                                              --Crisel roxas (talk) 01:55, 9 October 2012 (UTC)1.External respiration-the movement or the transport of oxygen from the lungs to the blood. --   2.Iternal respiration-transporting oxygen from the blood