Oxygen is the gas that passes from the lungs to the bloodstream.
Oxygen
Oxygen is the gas that usually passes into cells. It moves by diffusion from the bloodstream.
oxygen
The gas that passes from the bloodstream into the lungs is called carbon dioxide. Carbon dioxide is transported from the tissues to the lungs via the bloodstream, where it is exhaled out of the body during respiration.
Oxygen passes through the nasal cavity, pharynx, trachea, bronchi, bronchioles, and finally reaches the alveoli in the lungs where gas exchange occurs with the bloodstream.
Lung arterioles are relatively thin-walled to allow for gas exchange to occur easily. Thin walls help facilitate the diffusion of oxygen from the air sacs in the lungs into the bloodstream and carbon dioxide out of the bloodstream and into the air sacs. This design maximizes efficiency of gas exchange in the lungs.
When air passes through the respiratory system, it travels through the nose or mouth, down the trachea (windpipe), and into the lungs where gas exchange occurs. Oxygen from the air is absorbed into the bloodstream, and carbon dioxide is released from the bloodstream into the air to be exhaled.
Oxygen molecules diffuse across the alveolar membrane in the lungs into the bloodstream. This is where gas exchange occurs, with oxygen moving from the alveoli into capillaries surrounding the alveoli.
Oxygen
+++Osmosis
Oxygen is obtained from the atmosphere by a process called Respiration, this involves inhaling air and filling small air sacs in the lung, at which point the oxgen passes into the bloodstream through a process called Diffusion.
no they both do the same thing pump oxygen into your bloodstream