Company sergeant major. The company sergeant major (CSM) is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for administration, standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company.
Urothelium The urothelium is a layer that lines much of the urinary tract, including the renal pelvis, the ureters, the bladder, and parts of the urethra. U.S. National Library of Medicine (0.00 / 0 votes) Rate this definition:
Structure and function. Urothelial tissue is highly specific to the urinary tract, and has high elasticity and trans-epithelial electrical resistance. Urothelium consists of approximately 3-5 cell layers, accompanied by a thick layer of protective glycoprotein plaques at its luminal (apical) surface, and is classified as transitional epithelium.