In 1909, Western Union and ADT came under the control of American Telephone & Telegraph Company (AT&T). ADT began to expand into new areas, such as fire alarms and security alarms between 1910 and 1930, but was kept separate from AT&T's Holmes alarm business. ADT became a publicly owned company in the 1960s.
It has moist membranes. Many, but not all (urinary), secrete mucous. Serous: Lines open body cavities that are closed to the exterior body surface. composed of simple squamous epithelium resting on thin layer of areolar connective tissue.
Which type of tissue covers body surfaces and lines cavities? Epithelial tissue is one of the four types of tissue in the body (nervous, muscular, and connective being the other three) that lines the body cavities. It is also found in thâ¦e skin, which is the organ that covers most of the body's surface. Pam Hurston. + 2 others found this useful.