A seam on the outside of a steel water tank is often an indication of the presence of a diaphragm. Both bladders and diaphragms serve the same function, creating a pressure differential using compressed air that pushes against the water, ejecting it from the tank.
Exostosis is the medical term for an abnormal growth of bone within the ear canal. It is more commonly referred to as swimmerâs or surferâs ear.xostosis symptoms of include a decrease in hearing sensitivity possibly combined with an increased prevalence of ear infections. Early symptoms include water trapping in the ear canal after swimming. Sometime thereafter, debris trapping and infections make surgery necessary.
Multiple hereditary exostosis (MHE) is an autosomal dominant disorder characterized by the development of multiple osteochondromas and a defect in the EXT-1, EXT-2, or EXT-3 gene. EXT-1 patients have higher rates of sarcomatous change when compared to those with a defect in EXT-2.