A key process in surfactant secretion is exocytosis of LB, and there have been several ultrastructural observations of lamellar material passing from AT II cells into alveoli (reviewed in ref.
In one general practice sample, costochondritis, also known as costosternal syndrome and anterior chest wall syndrome, was the most common specific cause of anterior musculoskeletal chest pain, with a prevalence of 13%.
In fact, there. could be a number of causes for this sort. of chest-wall discomfort. For example, if chest pain increases when you press. your finger on the painful site, or if you. can pinpoint the spot that hurts, it is. probably from a strained muscle, liga-. ment, or maybe even a fractured rib. An inflammation of the cartilage in the. chest wall (called costochondritis) can.