The Respiratory System

Pulmonary ventilation

Breathing
inspiration

air flow into the lungs
expiration

air flow out of the lungs
Pulmonary ventilation is a mechanical process dependent on

volume changes in the thoracic cavity
volume changes lead to pressure changes which leads to

flow of gases to equalize pressure
Respiratory pressure is described relative to

atmospheric pressure
atmospheric pressure is in relation to sea level equals

760 mmHg
Pressure exerted by air surrounding the body

atmospheric pressure
Less than atmospheric pressure

negative respiratory pressure
Greater than atmospheric pressure

Positive respiratory pressure
pressure within the alveoli

intrapulmonary pressure
pressure within the pleural cavity

intraplueral pressure

Author

abutler5

316659

Card Set

The Respiratory System

Description

Chapter 21

Updated

2016-03-01T00:10:33Z

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