Describe the structure and function of the alveolus.

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College Answer

Better answers related structure to function. Many answers lacked key anatomical features (for 
example pores of Kohn, basement membrane, interconnecting walls / alveolar 
interdependence etc.). There was little understanding of the role and origin of the basement 
membrane of the alveolus. Some candidates went into detailed discussions of Work of 
Breathing, respiratory mechanics and the renin-angiotensin system which were not asked for.
Answers not reaching a pass mark generally suffered from lacking detail and suggested only a 
superficial understanding of the area.