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In respiratory physiology, the oxygen cascade describes the flow of oxygen from air to mitochondria, where it is consumed in aerobic respiration to release energy. [1] Oxygen flows from areas with high partial pressure of oxygen (PO 2 , also known as oxygen tension ) to areas of lower PO 2 .
Levels of O 2 and CO 2 in tissue can influence blood flow and thereby influence washout of dissolved inert gas, but the magnitude of the oxygen window has no direct effect on inert-gas washout. The oxygen window provides a tendency for absorption of the gas quantities in the body such as pneumothoraces or decompression sickness (DCS) bubbles. [9]
The oxygen–hemoglobin dissociation curve, also called the oxyhemoglobin dissociation curve or oxygen dissociation curve (ODC), is a curve that plots the proportion of hemoglobin in its saturated (oxygen-laden) form on the vertical axis against the prevailing oxygen tension on the horizontal axis. This curve is an important tool for ...
Respiratory physiology is the biological function of metabolic gas exchange. The complementary category for the anatomical structure of respiratory systems is Category:Respiratory system. The complementary category for the anatomical structure of respiratory systems is Category:Respiratory system.
For this reason, some climbers carry supplemental oxygen to prevent hypoxia, edema, and HAPE. The standard drug treatment of dexamethasone does not alter the hypoxia or the consequent vasoconstriction, but stimulates fluid reabsorption in the lungs to reverse the edema. Additionally, several studies on native populations remaining at high ...
The Shunt equation (also known as the Berggren equation) quantifies the extent to which venous blood bypasses oxygenation in the capillaries of the lung.. “Shunt” and “dead space“ are terms used to describe conditions where either blood flow or ventilation do not interact with each other in the lung, as they should for efficient gas exchange to take place.
An extreme example of pendelluft is found in a spontaneously breathing patient with an open hemithorax [3] or large flail segment. [4] During the inspiratory phase, the contralateral lung (with a closed / intact chest wall) will expand with most of the tidal volume, with the open plura or paradoxical chest wall movement preventing expansion of the ipsilateral lung.
It was first conceptualized by August Krogh in 1919 with the help of Agner Krarup Erlang to describe oxygen supply in living tissues from human blood vessels. [ 1 ] [ 2 ] Its applicability has been extended to various academic fields, and has been successful explaining drug diffusion, water transport, and ice formation in tissues.