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Abstract

Lung is vtial organ that contains more than 40 different cell types localised regionally and spatially with varied number of mitochondria. It is evident that every cell depends on the mitochondrial oxidative phosphorylation for the production and supply of ATP. Among the cells, one type of cell is bronchial epithelial cells that possess cila. These specialized cells act as a line of defense against the entered pathogen or antigen. These cells with the help of mucous secreted by goblet cells expel out the entered pathogen by its cilary beating movement.

Keywords: Lung, ATP, Phosphorylation, Mitochondria, Goblet cells