Customer Support. Busey Holidays Observed New Year's Eve all facilities close at 5 p.m. New Year's Day all facilities closed Martin Luther King Day customer support available 8 a.m. - 1 p.m. CST Presidents' Day customer support available 8 a.m. - 1 p.m.
Orbicularis oris muscle. In human anatomy, the orbicularis oris muscle is a complex of muscles in the lips that encircles the mouth. Until recently, it was misinterpreted as a sphincter, or circular muscle, but it is actually composed of four independent quadrants that interlace and give only an appearance of circularity.
The lips are the soft and pliable fleshy tissue that connects to the front area of the cheeks. The outside of the lips is covered by skin. The gingiva attaches to the part of the lips inside the mouth that is covered by the mucous membrane. Blood vessels close to the surface of the skin give lips their red color.