Asked in Biology
Why is there no difference in the amount of nitrogen you inhale and exhale?
The reason is that the body does not use nitrogen gas. When you breathe in, nitrogen gas will enter the blood and circulate around the body without being used up or added to. When it reaches the lungs it will pass out again. Essentially, there is an equilibrium between nitrogen in the air (in the lungs) and nitrogen in the blood: on average, for every nitrogen molecule which diffuses into the blood one will diffuse out. So the amount of nitrogen in...
Asked in Circulatory System
Why is the nitrogen we breathe in not absorbed by the blood vessels?
The Nitrogen we breathe IS absorbed by the blood vessels (and all the body tissues). While the Nitrogen gas from the air is inert and does not play any part in body processes, Henry's gas laws require that some of the Nitrogen will be absorbed/dissolve in the blood (and body tissues). This becomes an issue for sub aqua divers where the presence of this dissolved nitrogen causes the "bends". ...
Asked in Science
You breathe out the same amount of nitrogen as you breathe in Why is this?
because the haemoglobin present in our blood has no capacity to absorb nitrogen so the result is that the nitrogen is not absorbed and you breathe out the same amount of nitrogen as you breathed in....... ...
Asked in Laboratory Testing, Urinary System
How are blood kidney function tests done?
Blood urea nitrogen test (BUN). Urea is a by-product of protein metabolism. This waste product is formed in the liver, then filtered from the blood and excreted in the urine by the kidneys. The BUN test measures the amount of nitrogen. ...