It passes through the lungs.
lungs.
Carbon dioxide because that exits through the lungs.
Carry oxygen and nutrients to organs and carbon dioxide and metabolites away from organs
Their function is to rid the body of carbon dioxide and to provide oxygen to the cells of your body.
Respiratory System.
Blood containing carbon dioxide flows from veins throughout the body to the heart, and then the heart pumps it to the lungs. Small air sacs (alveoli) in the lungs remove the carbon dioxide from the blood and release it into the lungs where it is exhaled.
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.
Carbon dioxide is produced inside all the cells of the body, as a metabolic by-product. Carbon dioxide does not enter through the lungs, rather, it leaves through the lungs.
The red blood cells carry oxygen that is transported to the different organs in the body and absorbs carbon dioxide from the organs that is transported to the lungs where it is exhaled out of the body. The protein hemoglobin helps to bind oxygen and carbon dioxide in the red blood cells.
The organs that provide the body with oxygen and get rid of carbon dioxide are part of the respiratory system.
The carbon dioxide is dissolved in your blood. The blood travels round the body, to the lungs. Oxygen and Carbon Dioxide are exchanged during breathing. The Carbon Dioxide is exhaled from the lungs, through the mouth.
The red blood cells in your body contain oxygen and carbon dioxide. So, as the red blood cells travel through your bloodstream, the oxygen travels through to your heart, then your lungs, along with the oxygen.