Lecture6: Compliance In Respiration Flashcards
What is Transpulmonary pressure?
The pressure diff between the alveolar and pleural pressures
What the lungs are remarkably distensible, what does that mean?
Compliance is high and elastance is low
How much does the lung expand every 1 cm h2o
130ml
Why does the lung have a higher compliance than the total compliance?
Because chest wall movements are limited by the boney wall and respiratory muscles
What is the compliance of the lung alone?
200 ml/cm h2o
What are the 2 causes of Reduced Compliance?
Rigid lung and rigid thoracic cage
What are causes of Rigid thoracic cage?
Deformities of the vertebral column
Name 2 causes of Increased Compliance?
Old age and COPD
A male, whose a heavy smoker presents with abnormal dilation of air spaces between the terminal bronchioles, what does he have?
Emphysema
What is the cause of chronic bronchitis?
Chronic irritation by heavy cigarette smoke
What does the chronic irritation in chronic bronchitis lead to?
Hyper secretion of mucous
What is a Surfactant?
A surface tension lowering agent
What produces surfactant?
Type 2 alveolar bodies
What Is surfactant produced as?
Lamellar bodies
What does surfactant contain?
DPPC
