The other three types are connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of blood vessels and organs throughout the body. There are three principal shapes of epithelial cells: squamous, columnar, and cuboidal.These can be arranged in a single layer of cells as simple epithelium, either squamous, columnar or cuboidal, or in layers of two or more cells deep as stratified (layered), either squamous, columnar or cuboidal.All glands are made up of epithelial cells.pithelial tissues line the cavities and surfaces of blood vessels and organs throughout the body. There are three principal shapes of epithelial cells: squamous, columnar, and cuboidal.
Freebase(0.00 / 0 votes)Rate this definition: Tweed. Tweed is a rough, unfinished woollen fabric, of a soft, open, flexible texture, resembling cheviot or homespun, but more closely woven. It is made in either plain or twill weave and may have a check or herringbone pattern.
William M. âBossâ Tweed was a legendary corrupt political leader of New York City in the years following the Civil War. Along with members of the âTweed Ring,â he was suspected of siphoning untold millions of dollars from the cityâs coffers before public outrage turned against him and he was prosecuted.s leader of New York Cityâs famed political machine, Tammany Hall, Tweed essentially ran the city in the years following the Civil War. He was also known to work closely with two particularly unscrupulous businessmen, Jay Gould and Jim Fisk.