The first, termed the "reflux theory," proposes that respiratory symptoms are the result of micro-aspiration of gastric contents into the lungs and/or
bronchia. The second, called the "reflex theory," proposes that constriction or collapse of bronchial tubes is a vagus nerve-mediated event that follows acidification of the lower esophagus (Garrigues and others 2003).
Core Structure Human tissue Reference(s) 1 Gal[beta]1-3GalNAc Most cells and (7) secreted proteins 2 Gal[beta]1-3 All blood cells (221) 3 GlcNAc[beta]1-3GalNAc Colon and saliva (222, 223) 4 GlcNAc[beta]1- Mucin-secreting (221) 3(GlcNAc[beta]1-6)GalNAc cell types 5 GalNAc[alpha]1-3GalNAc Meconium (224) 6 GlcNAc[beta]1-6GalNAc Ovarian tissue (225) 7 GlcNAc[alpha]1-6GalNAc 8 Gal[alpha]1-3GalNAc
Bronchia (226) Table 3.
In Square Rounds, he satirizes his characters' learned discourse and his own verse skill with the words of a character named Sweeper Mawes: "Just 'cos my
bronchia get wonkier and wonkier/ don't think that I can't recite." In Bow Down (1971), an extraordinary dramatic piece based on various incarnations of a ballad, "The Two Sisters" he dramatizes the lyric's fraternal murder by mingling Middle English and Scandinavian versions with the plain, even base, language of modern life.
The collapse of the very smallest
bronchia tubes corresponds to the severe symptoms of asthma, he notes.