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.
Typical call costs to 07800 numbers. Calls to mobiles are charged between 5p and 12p per minute from BT landlines and other landline providers and are typically not included in free call packages. Call costs from mobiles vary according to the calling plan chosen. Typically they cost between 8p and 40p per minute.alls to mobiles are charged between 5p and 12p per minute from BT landlines and other landline providers and are typically not included in free call packages. Call costs from mobiles vary according to the calling plan chosen. Typically they cost between 8p and 40p per minute.