Physiology respiration
15 important questions on Physiology respiration
What is the formula for flow (how the lungs are filled with air)?
F = flow
Palv= pressure in alveoli
Patm = pressure in athmosphere
R = resistance
If you look at the formula for flow. What does increase when you have asthma?
Is the pressure in the pleura negative or positive with respect to the pressure in the chest wall and the intrapulmonary pressure? How can this be explained?
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What is the inspiratory reserve volume (IRV)?
What is the total lung capacity (TC/TLC)?
What is the vital capacity (VC)?
What is lung compliance? What is the formula?
Lung compliance = Δ lung volume / Δ transpulmonary pressure
What is the transpulmonary pressure?
What do you know about the lung compliance?
What are obstructive lung diseases? Is the compliance higher or lower?
- Emphysema: damaged alveoli --> lung take up more space.
- Chronic bronchitis: lung and airway inflamed
For these patients breathing in is easier, breathing out harder --> compliance higher
What is a restrictive lung disease? Is compliance higher or lower in these diseases?
Breathing in is harder so the compliance is lower.
How is O2 transported in the blood?
Dissolved gas in blood: 1.5%
How is CO2 transported in the blood?
Bicarbonate: 70%
CO2 bound to hemoglobin: 23%
What are sensors of the regulation of respiration?
What is the difference between hypo- and hyperventilation?
- Acidification of blood
- Coma
- pH increases
- Vasoconstriction in brains (dizzy + fainting)
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