Oxygen enters the blood stream through the air sacs in you lungs.
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The lungs, I the alviolies.
In air breathing animals, oxygen enters the blood stream through the alveoli, tiny sacs in the lungs. In water breathing animals oxygen enters the blood stream through the gills.
through cells in the villi of the small intestine
The brochiole's function is to allow oxygen to pass into the aveoli (air sacks covered in capillaries) where the oxygen can then enter your blood stream.
Decomposers react on organic matter.They utilize Oxygen to breakdown organic materials.So Oxygen level drops.
Pollution enters the system by respiration. When you breathe in your body uses the oxygen in the "air". But when pollution is in the "air", your body takes that in and enters the Ovules of the lung and enter your blood stream.
The oxygen content of a river or stream is likely to be highest at the source. The source of the river or stream is where it originates.
Oxygen enter the capillaries by diffusion due to difference in oxygen concentrations.
there is more dissolved oxygen present in a stream because the movement and the bubbling of the air allows more oxygen to be ingested
You drink it
How long does it take Dilaudid to get into the blood stream.