Semester 2: L3 - Gas exchange in lungs and tissues Airway disease Flashcards
whats henrys law?
[gas] in solution proportional to partial pressure of gas (P) and solubility of the gas (s)
whats henrys laws equation?
V = s.P
what is more soluble O2 or CO2?
CO2
what do red blood cells play important roles in?
haemoglobin
carbonic anhydrase
Cl-HCO3 exchanger “Cl-shift”
How does transport happen in or out of the red blood cells?
diffusion and bulk flow in blood
whats the ficks law equation?
Q = D. A. (P1-P2)
t
what do the letters in ricks law equation stand for?
D - diffusion coefficient A - surface area t - thickness of membrane p1-p2 : partial pressure difference across membrane
How many subunits does haemoglobin have?
4
what are three obstructive lung diseases?
emphysema, chronic bronchitis, asthma
what is an obstructive lung disease ?
Increased resistance to airflow caused by partially occluded airways
what is a restricted lung disease ?
expansion of lung restricted
what is pulmonary fibrosis?
thickening of alveolar wall, makes it harder to fill lungs
what is the diseases of the chest wall ?
ankylosing spondylitis: immobility of vertebra and ribs
what does COPD stand for?
chronic obstructive pulmonary disease
what is asthma?
chronic respiratory disease characterized by episodes or attacks of inflammation and narrowing of small airways in response to asthma “triggers.”
