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:
â¢ Transitional epithelial cells, or urothelium, are cells found in the ureter, bladder, and renal pelvis. These cells consist of multiple layers that expand or contract such as in the case of the bladder when it is full. They work to accommodate liquid volume and protect against the effects of the urine.