Pulmonary alveolus thin fluid coating within all alveoli. The fluid coating is produced by the body in order to facilitate the transfer of gases between blood and alveolar air. The surfactant is produced by the type II cells which are the most numerous cells in the alveoli, yet do not cover as much surface area as the squamous alveolar cells (a squamous epithelium). Type II cells also repair the endothelium of the alveolus when it becomes damaged. Insufficient surfactant in the alveoli can contribute to atelectasis (collapse of part or all of the lung). Without pulmonary surfactant, atelectasis is a certainty; however,
The body in traditional Chinese medicine The body in traditional Chinese medicine The model of the body in traditional Chinese medicine (TCM) has the following elements: Every diagnosis is a "Pattern of disharmony" that affects one or more organs, such as "Spleen Qi Deficiency" or "Liver Fire Blazing" or "Invasion of the Stomach by Cold", and every treatment is centered on correcting the disharmony. The traditional Chinese model is concerned with function. Thus, the TCM Spleen is not a specific piece of flesh, but an aspect of function related to transformation and transportation within the body, and of the mental functions of thinking and studying. Indeed,