First, a definition. Steaks are basically any piece of meat that falls under the category of fast-cooking cutsâcuts that are low enough in connective tissue that they don't require the long cooking times that slow-cooking cuts require. The difference between a steak and roast essentially comes down to size.
Medical Definition of ORBICULARIS ORIS. : a muscle made up of several layers of fibers passing in different directions that encircles the mouth and controls most movements of the lips (as compressing, closing, or pursing movements).edical Definition of ORBICULARIS ORIS. : a muscle made up of several layers of fibers passing in different directions that encircles the mouth and controls most movements of the lips (as compressing, closing, or pursing movements).
The muscles of facial expression are located in the subcutaneous tissue, originating from bone or fascia, and inserting onto the skin. By contracting, the muscles pull on the skin and exert their effects.he fibres of the orbicularis oris enclose the opening to the oral cavity. 1  Attachments: Arises from the maxilla and from the other muscles of the cheek. 2  Action: Purses the lips. 3  Innervation: Facial nerve.