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.
During movement, the muscle that is contracted is the agonist muscle and the opposing muscle is the antagonist, that returns the agonist muscle back to its relaxed state.7 people found this useful. Edit.uring movement, the muscle that is contracted is the agonist muscle and the opposing muscle is the antagonist, that returns the agonist muscle back to its relaxed state. 7 people found this useful. Edit.