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 the period of contraction, _____ form and the muscle fiber shortens. Once myosin binds to actin, _____ changes shape, pulling the two filaments past one another. myosin As the two filaments (actin and myosin) slide past one another, _____ are released from the myosin. In order for myosin to release actin, it must bind _____.