Gas+exchange


 * Gas exchange** takes place at a respiratory surface—a boundary between the external environment and the interior of the body. The rate of gas echange depends on having:
 * a large surface area
 * a thin permeable surface
 * a moist exchange surface.

In humans gas exchange or ventilation is carried out by the respiratory system shown in the diagram below:
 * [|Gas-exchange.ppt]
 * [|Gas exchange notes.docx]
 * [|Gas exchange questions.docx]
 * [|Lung volume notes.docx]

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