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A&P lab 2 ch. 23

Terms in this set (21)

pulmonary ventilation
movement of air into and out of the lungs
pulmonary gas exchange
the movement of gases across the respiratory membrane or into the alveoli
gas trasport
movement of gases through the blood
tissue gas exchange
exchange of gases between blood in systemic capillaries and the tissues
inspiration
air is brought into the lungs
expiration
air is expelled through the lungs
atmospheric pressure
Force exerted by the weight of the air
spirometer
An instrument for measuring the air entering and leaving the lungs.
respiratory volume
volume of air exchanged with each breath.
respiratory capacity
the sum of two or more respiratory volumes
carbonic acid-bicarbonate buffer system
forms hydrogen and bicarbonate ions
carbonic anhydrase
enzyme that catalyzes the reaction between carbon dioxide and water to form carbonic acid
Hyperventilation
increased rate and depth of breathing
hypoventilation
decreased rate or depth of air movement into the lungs
tidal volume
amount of air exchanged with each breath during normal quiet breathing
residual volume
The air that remains in the lungs after maximal expiration.
Fictional residual capacity
amount of air that is left in the lungs after a tidal expiration
vital capacity
total amount of exchangeable air
total lung capacity
exchnageable and nonexchangeable air in the lungs
a restrictive disease generally causes difficulty with
inspiration
obstructive disease causes difficulty with
expiration
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