John Doe
John Doe answered mariaelena gramajo's question

The lungs work mainly in conjunction with the heart and circulatory system. The heart circulates oxygenated blood throughout the body which uses the oxygen, then returns the de-oxygenated blood to the lungs where it picks up more oxygen and is circulated again. It's much more complicated than that but that's the gist of it!

Sandra Figueroa
Sandra Figueroa answered

Stem cells research helps to growing blood sells. Human deserve to going his life on right process. Growing blood cells do not suffer  from any pain,Many people believe that it is wrong to do this and hence, despite how much embryonic stem cell research.  We Provides modern technological (PRF & Bone marrow)blood cells which make … Read more