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.
Differences : < br / > 1 ) Position -- Mucous membranes line cavities that connect with the exterior , including the digestive , respiratory , reproductive , and urinary tracts. < br / > Serous membranes line the sealed , internal cavities of the body. < br / > There are three such membranes with each consisting of a simple epithelium supported by ...