Concept Map: Mechanics of Breathing diaphragm and extenal intercostals decrease(

Question

Concept Map: Mechanics of Breathing diaphragm and extenal intercostals decrease(s) lung volume and increase(s) expiration include(s) a phase when air enters lungs, called inspiration include(s) a phase when air exits lungs, called intrapleural pressure increase(s) lung volume and decrease(s) intrapulmonary pressure is/are always about 4 mmHig greater than lungs minus intrapleural pressure give(s) pulmonary ventilation transpulmonary pressure must be negative to prevent collapse of -occur(s) when contracting ? occur(s) when relaxing

Explanation / Answer

Mechanism of respiration

includes a phase when air enters the lungs is called inspiration

when inhale diaphragm and external intercostals contracts

expiration includes a phase where air exits the lungs.

minus intra pleural pressure must the transthoracic pressure for the expansion of lungs and increases lung volume

intra pulmonary pressure becomes less than atmospheric pressure during inspiration and greater than atmospheric pressure while expiration.

pulmonary ventillation is the air flowing of lungs during inspiration

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