The respiratory system is the first link in the process of oxygen delivery to the body's tissues. The transport of oxygen in the air you breathe to the alveoli in your lungs allows for the diffusion of oxygen into the blood stream.
Diffusion through capillaries
Oxygen enters the bloodstream through the process of diffusion in the lungs. When we breathe in, oxygen passes through tiny air sacs in the lungs called alveoli and diffuses into the bloodstream through the thin walls of the capillaries surrounding the alveoli. This oxygen-rich blood is then pumped to the rest of the body by the heart.
diffusion
diffusion
I believe it might be HEMOGLOBIN.
When you inhale, oxygen fills your lungs. Next the oxygen diffuses out of your lungs into your bloodstream. The diffusion of oxygen from the lungs causes less pressure in your lungs signaling your brain that you need to inhale.
Capillary walls receive oxygen in the lungs by a process known as diffusion.
using diffusion and osmosis.
diffusion of gases (oxygen and carbon dioxide) to & from air in lungs and capillaries in alveoli
Blood is taken away from the lungs as it circulates.
When breathing oxygen into the lungs, animals are using diffusion to distribute that oxygen to all cells in the organism. Carbon dioxide in turn is diffused from the bodies cells into the lungs to be breathed out. Plants also use diffusion to obtain carbon dioxide and excrete oxygen. Diffusion is used in photosynthesis and also when absorbing water and minerals from the soil and into the roots.