171. increase in pH
172. The posterior wall of the trachea contains smooth : 1380579.
171. increase in pH
172. The posterior wall of the trachea contains smooth muscle called the __________ muscle.
173. The __________ zone extends from the trachea to the terminal bronchioles.
174. Gas exchange between the air and the blood takes place in the __________.
175. The thyroid cartilage is part of the __________.
176. Contraction of the __________ muscles will elevate the ribs and move the sternum.
177. __________ is the volume of air inspired during a normal inspiration.
178. The part of the respiratory system where gas exchange does not occur is called __________ space.
171. increase in pH
172. The posterior wall of the trachea contains smooth : 1380579
