Gas Exchanges in the Body


Question Answer
Describes the fact that each gas a mixture exerts pressure according to its percentage in the mixture Dalton's law
States that at constant temperature, the pressure of a gas varies inversely with it's volume Boyle's law
States that when gases are in contact with liquids, each gas will dissolve in proportion to its partial pressure and solubility in the liquid Henry's law
What therapy is used to treat carbon monoxide poisoning, gas gangrene, and tetanus? Hyperbaric oxygen
This therapy represents a clinical application of which of the ideal gas laws? Henry's law
What are the mechanism and consequences of oxygen toxicity? Mechanism: generation of free radicals Consequences: CNS depression, coma, death
Period of breathing when air enters the lungs Inspiration
Period of breathing when air leaves the lungs Expiration
Alternate flushing of air into and out of the lungs Pulmonary ventilation(breathing)
Exchange of gases between alveolar air and pulmonary capillary blood External respiration
Exchange of gases between blood and tissue cells Internal respiration
All gas exchanges are made by Diffusion
When substances pass in this manner, they move from areas of their___to areas of their___. Higher concentration, Lower concentration
Thus oxygen continually passes from the___and then from the___. Air of alveoli to capillary blood; Capillary blood to tissue cells
Conversely, carbon dioxide moves from the___and from___. Tissue cells to capillary blood; Capillary blood to alveolar air
As a result of such exchanges, arterial blood tends to be relatively___, while venous blood is relatively___. Carbon dioxide poor and oxygen rich; Oxygen poor and carbon dioxide rich



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