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%.
Other less emergent causes of chest pain can include: Costochondritis. Costochondritis is chest wall pain caused by inflamed cartilage located where your ribs and breast bone meet. Costochondritis can mimic the pain of a heart attack and is often aggravated when you inhale and exhale deeply.