This article discusses cellular architecture and physiology relevant to pho
nation biology. The mucociliary blanket and its role in external vocal fold
lubrication are presented. The epithelium, basement membrane zone, and lam
ina propria all have specific roles in oscillating tissue. Three cell types
, fibroblast, myofibroblast, and macrophage, maintain important and unique
roles. Protein turnover in the lamina propria is important, and slowing mat
rix turnover may be a leading factor in creating some of the characteristic
s associated with vocal senescence. Lastly, aspects of cellular health and
cellular pathology are discussed.