iltbehov
Iltbehov refers to the oxygen requirement of an organism or tissue. This need is fundamental for cellular respiration, the process by which cells convert nutrients into energy. The amount of iltbehov varies significantly depending on factors such as the organism's species, size, activity level, and metabolic rate. For instance, highly active animals generally have a higher iltbehov than sedentary ones. Similarly, during periods of increased physical exertion or stress, an organism's iltbehov will rise.
In humans, iltbehov is primarily met by the respiratory system, which takes in oxygen from the atmosphere