Respiratory System

Chapter 8 Respiratory System





Rhinitis












Respiration


The normal intake of air is around 7 litres per minute; of this, after allowing for nonfunctioning dead space (trachea, bronchi, etc.), approximately 5 litres per minute are available for alveolar ventilation. A definite flow of air is maintained as far as the terminal bronchiole. Beyond this point the actual flow ceases and gas exchange is effected by diffusion.



Three factors are involved in the maintenance of adequate respiration:



Interference with any of these factors will result in respiratory embarrassment (dyspnoea) and even respiratory failure.








Jul 23, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Respiratory System

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