Although it's generally viewed as a single muscle, it is 2 unique muscle mass regions: the crural diaphragm as well as the costal diaphragm. Both Engage in a task in how the decreased rib cage expands all through breathing.4 van bi trong m?t chi?c b?m màng gi?ng nh? nh?ng chi?c ch?t ?óng m? t?i các “c?a” c?a b?m ?? gi? ho?c th? dung d?ch ra