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  2. Oxygen storage - Wikipedia

    en.wikipedia.org/wiki/Oxygen_storage

    Methods of oxygen storage for subsequent use span many approaches, including high pressures in oxygen tanks, cryogenics, oxygen-rich compounds and reaction mixtures, and chemical compounds that reversibly release oxygen upon heating or pressure change. O 2 is the second most important industrial gas.

  3. Airway resistance - Wikipedia

    en.wikipedia.org/wiki/Airway_resistance

    In fluid dynamics, the Hagen–Poiseuille equation is a physical law that gives the pressure drop in a fluid flowing through a long cylindrical pipe. The assumptions of the equation are that the flow is laminar viscous and incompressible and the flow is through a constant circular cross-section that is substantially longer than its diameter.

  4. Dead space (physiology) - Wikipedia

    en.wikipedia.org/wiki/Dead_space_(physiology)

    Arterial oxygen tension, or partial pressure: P A O 2: Alveolar oxygen tension, or partial pressure: P a CO 2: Arterial carbon dioxide tension, or partial pressure: P A CO 2: Alveolar carbon dioxide tension, or partial pressure: P v O 2: Oxygen tension of mixed venous blood: P (A-a) O 2: Alveolar-arterial oxygen tension difference. The term ...

  5. Control of ventilation - Wikipedia

    en.wikipedia.org/wiki/Control_of_ventilation

    Ventilation facilitates respiration. Respiration refers to the utilization of oxygen and balancing of carbon dioxide by the body as a whole, or by individual cells in cellular respiration. [1] The most important function of breathing is the supplying of oxygen to the body and balancing of the carbon dioxide levels.

  6. Air sac - Wikipedia

    en.wikipedia.org/wiki/Air_sac

    Changes in air pressure patterns are indicative of respiratory muscle activity and the airflow around the syrinx, the primary vocalization organ of songbirds. [20] The portion of the neural pathways which control respiration during vocalization changes air sac pressure to control vocal intensity. [21]

  7. Physiology of decompression - Wikipedia

    en.wikipedia.org/wiki/Physiology_of_decompression

    Isobaric counterdiffusion (ICD) is the diffusion of gases in opposite directions caused by a change in the composition of the external ambient gas or breathing gas without change in the ambient pressure. During decompression after a dive this can occur when a change is made to the breathing gas, or when the diver moves into a gas filled ...

  8. Lung compliance - Wikipedia

    en.wikipedia.org/wiki/Lung_compliance

    Pulmonary compliance is calculated using the following equation, where ΔV is the change in volume, and ΔP is the change in pleural pressure: = For example, if a patient inhales 500 mL of air from a spirometer with an intrapleural pressure before inspiration of −5 cm H 2 O and −10 cm H 2 O at the end of inspiration.

  9. Inhalation - Wikipedia

    en.wikipedia.org/wiki/Inhalation

    The alveolar air pressure is therefore always close to atmospheric air pressure (about 100 kPa at sea level) at rest, with the pressure gradients that cause air to move in and out of the lungs during breathing rarely exceeding 2–3 kPa. [8] [9] Other muscles that can be involved in inhalation include: [10] External intercostal muscles; Scalene ...