Respiratory System Flashcards
Compliance=
Change in volume/change in pressure
Compliance is determined by
lung structure and surface tension
Pulmonary fibrosis
decreases the compliance of the lung and restricts inflation
Total compliance
Both lung and chest wall compliance
Lack of type ii alveoli
RDS (infants), ARDS (acute)
Surfactant
increases compliance
Too little surfactant
causes alveoli to collapse
Emphysema
destroys elastin fibers decreasing elastic recoil
Oxygen
21% of atmospheric pressure (ballpark 150-160mmHg)
Patm=
Pn2+Po2+Pco2+Ph2o
Hyperpnea
Inc respiratory rate in response to inc metabolism
Tachypnea
Short shallow breathing, dog panting
Emphysema and alveoli
Dec alveoli and dec surface area= Dec gas exchange
Emphysema and plasma
LOW PO2!
Fibrotic lung disease is a —– disease
Restrictive= Harder to breathe IN
Fibrotic lung disease=
Thick alveoli, loss of lung compliance, BLACK LUNG
Fibrotic lung disease and plasma
LOW PO2
Asthma ___ disease
OBSTRUCTIVE
Asthma and airways
Increased resistance, decreased ventilation, LOW PO2