What four muscles are involved with inspiration?
What are two muscles utilized for forced expiration?
Abdominal Muscles (most important)
What is the general relation b/t intrapleural and intraalveolar pressure?
Intrapleural always slightly less
What is the relation b/t elastic tissue and compliance?
Increase elastic tissue = decreased compliance
Describes the P-V graph where the expiration and inspiration lines form a circle but don't cross
What happens to
when volumes are high and low?
= Low compliance
= high compliance
When your alveoli collapse
How do surfactants prevent alveolar collapse?
Surfactants are FA and break up intramolecular forces
In babies, when does surfactant production begin?
Where is the site of maximum airway resistance?
Medium-sized bronchi #5-10
What will be the volume intake for a person with airway resistance?
Volume will be higher to compensate
What happens to Resistance during diving and for what reason?
occurs b/c of increase in gas in blood which increases viscosity
What gas is used to decrease resistance?