Layers of connective tissues that cover the entire body between the skin and the deep fascial areas of the specialized structures of the body; such as, the muscles: The subcutaneous fasciae consist of an outer normally fatty layer and an inner thin elastic layer of superficial blood vessels and between the two layers there are nerves, lymphatics (small, thin channels that are similar to blood vessels and that collect and carriy tissue fluid from the body), the mammary glands, most of the facial muscles, and the platysma (muscle in the neck extending from the face to the shoulder bone).