Carbon dioxide.
blood carbon dioxide levels
carbon dioxide. when CO2 levels reach a certain saturation point the brain is stimulated to take a breath.Type your answer here...
carbon dioxide
The respiratory system utilises oxygen from the environmrntal gases and expires carbon dioxide (CO2).
Carbon dioxide
Carbon dioxide.
Carbon dioxide
Carbon dioxide
The respiratory system moves oxygen in and carbon dioxide (CO2) out.
During the respiratory system, oxygen travels through the respiratory tract and diffuses to the red blood cells from alveoli which receives carbon dioxide from the RBC's. The carbon dioxide comes from cells in the body. When the RBC's travel through the body to transfer oxygen to the cells it receives carbon dioxide. The carbon dioxide enters the alveoli and travels through the respiratory tract and is breathed out.
The gases that are exchanged are oxygen and carbon dioxide.
Respiratory System