wicked-naughtily or annoyingly playful; teasing and worrying with impish laughter; a wicked prank. impish, implike, mischievous, pixilated, prankish, puckish, arch. playful-full of fun and high spirits; playful children just let loose from school.
Inspiratory Muscles. The principal muscle of inspiration is the diaphragm, a domed sheet of muscle that separates the thoracic and abdominal cavities. The diaphragm attaches to the lower ribs, as well as to the lumbar vertebrae of the spine.
HOW MUSCLES WORK. A voluntary muscles usually works across a joint. It is attached to both the bones by strong cords called tendons. When the muscles contracts, usually just one bone moves. For example when the biceps in the arm contracts, the radius moves but the scapula does not.