Vì v?y, bu?ng b?m ph?i ???c ch? t?o t? nh?ng v?t li?u t??ng thích v?i ??c tính c?a dung d?ch.?????????? - ?????????? - ???? - ??????????? - ??????????????? - ?????????The diaphragm is largely to blame for breathing by contracting rhythmically and involuntarily. All through inhalation, the diaphragm flattens, resulting in an increase in chest cav