The answe to this question at a primary school level is that the lungs absorb carbon dioxide CO2 from the blood and then feeds oxygen O2 back into the bloody stream
blood takes oxygen and gives carbon dioxide to the lungs
Gas exchange happens in the bed of CAPILLARIES in the lungs.
Blood plays an important role in transfer of OXYGINE to the cells from the lungs, which is used in the oxidation of food. and take carbon-dioxide from them.
The lungs
The three paths the blood can take once it has left the heart is to the brain, the lungs, and to the rest of the body and muscles. -Hope this helped(:
Blood vessels that carry blood from the heart to different organs are called arteries.Blood vessels that carry blood to the heart are called veins.
by using as nutrients
Oxygen
The Lungs
carbon dioxide.
carbon dioxide.
Blood is oxygenated in the lungs!