(1) Individual gases, such as oxygen, will move from an area of ___ partial pressure to an area of

___ partial pressure.


(2) The bottom of the trachea branches into two ____


(3) _____ sweep away the mucus that the lungs secrete.


(4) The presence of carbonic acid causes the hemoglobin to ___.


Answers;

ACilia (B) Low (c) High (d) Release oxygen (E) Primary bronchi