16 Questions
What principle states that the amount of a gas that dissolves in a liquid is directly proportional to the partial pressure of that gas above the liquid?
Henry's Law
What is the process by which gases move across a barrier (like the alveoli and capillary walls in the lungs) to equalize their partial pressures?
Diffusion
What is the composition of the alveolar air inside the lungs during normal gas exchange?
13% oxygen, 85% nitrogen, 2% carbon dioxide
Which gas law states that the absolute pressure (P) exerted by a given mass of an ideal gas is inversely proportional to the volume (V) it occupies if the temperature (T) and amount of gas remain unchanged within a closed system?
Boyle's Law
Which clinical application is related to the pressure and flow of IV fluids, where the higher the fluid container, the faster the fluid flow to the patient?
IV fluid administration
What is the application of Henry's Law in clinical practice?
Administration of oxygen therapy
What is the partial pressure of oxygen in the alveoli?
105 mmHg
What is the primary site of gas exchange in the lungs?
Alveoli
What is the clinical application of Dalton's Law?
Scuba diving
What is the term used to describe the pressure exerted by a gas per unit area?
Partial pressure
What is the primary reason oxygen diffuses into the blood?
Along a pressure gradient from higher to lower partial pressure
According to Henry's Law, what happens to the amount of oxygen dissolved in the blood when the partial pressure of oxygen in the alveolar air increases?
It increases
What is the primary function of haemoglobin in the context of gas exchange?
To bind to oxygen molecules for transport around the body
What is a clinical application of changing the alveolar air composition?
Oxygen therapy
What is the term for the measurement of the amount of haemoglobin molecules with oxygen attached?
Oxygen saturation level
What is the process by which oxygen diffuses from the bloodstream into the interstitial fluid and then cells?
Diffusion along pressure gradients
Test your knowledge on Venturi masks, IV fluid dynamics, nebulisers, blood flow, and pressure in clinical applications. Topics covered include fluid containers, blood pressure, vessel diameter, and heart contractions.
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