Physiological Feature/law To Definition Flashcards
The intracellular mechanisms and processes that consume oxygen and produce carbon dioxide.
Internal respiration
At a constant temperature, the pressure exerted by a gas varies inversely with the volume of the gas.
Boyle’s Law
P=2T/r describes the relationship between alveolar radius and the tendency to collapse. A smaller alveolar radius means a higher tendency to collapse.
Law of LaPlace
The processes that exchange oxygen and carbon dioxide between the external environment and the cells of the body.
Comprises ventilation, gas exchange between the alveoli and blood, gas transport, and gas exchange at the tissues.
External respiration
Maintains alveolar patency through the elastic recoil of surrounding alveoli preventing alveolar collapse.
Alveolar interdependence
A product of Type II alveolar cells that opposes alveolar surface tension.
Alveolar surfactant
Keeps the visceral and parietal pleurae closely opposed and can be overcome by a pneumothorax.
Transmural pressure gradient
Keeps the visceral and parietal pleurae closely opposed. Dependent on water molecule polarity.
Intrapleural fluid
Fick’s law of diffusion
Gas diffusion across a surface is inversely proportional to surface thickness and proportional to area
Dalton’s law
The total pressure of a mixture of gases equals the sum of the partial pressures of each component gas
The law of LaPlace
Smaller alveoli have a greater tendency to collapse
The Bohr effect
The oxygen dissocation curve is shifted right due to conditions in the tissues, meaning more oxygen is released
The Haldane effect
As O2 is removed from Hb, Hb’s ability to pick up CO2 and CO2-generated H+ ions is increased
Henry’s Law
The amount of a gas dissolved in a given type and volume of liquid at constant temperature is proportional to the partial pressure of the gas in equilibrium with the liquid
The volume of air breathed in and out per minute
Pulmonary ventilation
