Verywell Health on MSN3 个月
CO2 Blood Test to Check Carbon Dioxide Levels
Carbon dioxide (CO2) blood tests evaluate the presence ... Most venous CO2 blood tests are often run as part of routine blood ...
BBC4 年
How do humans breathe?
But how does it all work? Let’s use our virtual biology ... The alveoli absorb carbon dioxide from the blood. When we breathe out, the chest muscles move down and inwards. The diaphragm moves ...