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  2. Lung volumes and capacities - Wikipedia

    en.wikipedia.org/wiki/Lung_volumes_and_capacities

    The average total lung capacity of an adult human male is about 6 litres of air. [1] Tidal breathing is normal, resting breathing; the tidal volume is the volume of air that is inhaled or exhaled in only a single such breath. The average human respiratory rate is 30–60 breaths per minute at birth, [2] decreasing to 12–20 breaths per minute ...

  3. Respiratory system - Wikipedia

    en.wikipedia.org/wiki/Respiratory_system

    A rise in the arterial partial pressure of CO 2 and, to a lesser extent, a fall in the arterial partial pressure of O 2, will reflexly cause deeper and faster breathing until the blood gas tensions in the lungs, and therefore the arterial blood, return to normal. The converse happens when the carbon dioxide tension falls, or, again to a lesser ...

  4. Minute ventilation - Wikipedia

    en.wikipedia.org/wiki/Minute_ventilation

    The healthy human body will alter minute volume in an attempt to maintain physiologic homeostasis. A normal minute volume while resting is about 5–8 liters per minute in humans. [1] Minute volume generally decreases when at rest, and increases with exercise. For example, during light activities minute volume may be around 12 litres.

  5. Breathing - Wikipedia

    en.wikipedia.org/wiki/Breathing

    At this point the lungs contain the functional residual capacity of air, which, in the adult human, has a volume of about 2.5–3.0 liters. [8] During heavy breathing as, for instance, during exercise, exhalation is brought about by relaxation of all the muscles of inhalation, (in the same way as at rest), but, in addition, the abdominal ...

  6. Inhalation - Wikipedia

    en.wikipedia.org/wiki/Inhalation

    [3] [4] It is possible to begin with the mouth, which is the backup breathing system. However, chronic mouth breathing leads to, or is a sign of, illness, and it does not have mucus in the mouth to trap the unwanted substance unlike the nostrils [5] [6] [7] They end in the microscopic dead-end sacs always opened, though the diameters of the ...

  7. Mouth breathing - Wikipedia

    en.wikipedia.org/wiki/Mouth_breathing

    Thus, the impact of chronic mouth breathing on health is a research area within orthodontics (and the related field of myofunctional therapy) [9] and anthropology. [10] It is classified into three types: obstructive, habitual, and anatomic. [11]: 281 There is a noted order of cause and effect leading to airway dysfunction related to mouth ...

  8. Human sense of smell is faster than previously thought, new ...

    www.aol.com/human-sense-smell-faster-previously...

    A new study demonstrates that your sense of smell may be more sensitive than previously thought.

  9. Tidal volume - Wikipedia

    en.wikipedia.org/wiki/Tidal_volume

    TLC: Total lung capacity: the volume in the lungs at maximal inflation, the sum of VC and RV. TV: Tidal volume: that volume of air moved into or out of the lungs in 1 breath (TV indicates a subdivision of the lung; when tidal volume is precisely measured, as in gas exchange calculation, the symbol TV or V T is used.)