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:
Endothelium: A layer of flat cells lining the closed internal spaces of the body such as the inside of blood vessels and lymphatic vessels (that convey the lymph, a milky fluid) and the heart.ndothelium: A layer of flat cells lining the closed internal spaces of the body such as the inside of blood vessels and lymphatic vessels (that convey the lymph, a milky fluid) and the heart.