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.
submitted 1 year ago * by mikeil. I have an AT&T landline with a package that's about $50/month. We rarely ever use the phone and I'm about to switch over to google voice for the majority of the calls, but still want to keep the landline for 911 and something else that rarely ever uses the phone.