The mandible is a U-shaped bone. It is the only mobile bone of the facial skeleton, and, since it houses the lower teeth, its motion is essential for mastication. It is formed by intramembranous ossification. The mandible is composed of 2 hemimandibles joined at the midline by a vertical symphysis.
1 For example, AT&T charges $23 for a home residential line that includes a few additional basic features such as caller ID, call waiting and voicemail. 2  Home phone service plans that include local and long-distance calling cost $30-$45 per month.
AT&T Internet offers internet and home phone delivered over DSL in 91% of Los Angeles. Currently, we've cataloged one internet plan with a download speed of 6.0mbps for $30.00/mo. AT&T Internet's plans have data caps in place.