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Chapter 22
Respiratory System Things to know
15
Anatomy
Undergraduate 2
03/08/2010

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Term
Visceral Pleura
Definition
Visceral Pleura A thin membrane that drapes over the lungs
Term
what three things does the pleura and pleura fluid
Definition
1.Reduces friction
2.CREATES A PRESSURE GRADIENT
3.Compartmentalization.
Term
What are the two phases of pulmonary ventilation
Definition
inspiration
expiration
Term
Boyles law
Definition
the pressure of a given quantity of gas is inversely proportional to its volume (assuming a constant temperature).
Term
Charles Law
Definition
the volume of a given quantity of gas is directly proportional to its absolute temperature (assuming a constant pressure.
Term
Dalton's Law
Definition
the total pressure of a gas mixture is equal to the sum of the partial pressures of its individual gases
Term
Henry's Law
Definition
at the air water interface, the amount of gas that dissolves in water is determined by its solubility in water and its partial pressure in the air (assuming a constant temperature)
Term
What is the percentage of nitrogen in the air?
Definition
79% of the gases in the air
Term
What is the percentage of nitrogen in the air?
Definition
79% of the gases in the air
Term
Why don't we absorb nitrogen
Definition
it does not dissolve readily in water
(Henry's Law)
Term
What is the pressure exerted by the air surrounding the body (Atmospheric pressure)
Definition
760 mmHg (1 atm)
Term
Intra-Pulmonary pressure
Definition
pressure in the alveolar
Fluctuates with breathing
Term
Intra pleural pressure Pip
Definition
Its always less than 760 mmHg
Term
What makes the lungs want to collapse
Definition
it is made out of elastic tissue
surface pressure
Term
What is the condition in which the lung collapse
Definition
atelectasis
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