Figure 2

Comparison between smooth muscle pressures obtained from two different protocols. In panel A, the atropine-resistant pressures are subtracted from full pressure profiles, while in panel B the full smooth-muscle pressure distributions were measured directly after pharmacologically attenuating the skeletal crural muscle with cisatracurium. The x axis represents the relative distance from the start of right crural diaphragm, and the y axis represents the pressures relative to the gastric pressures. The pressures in panel A were obtained under full inspiration, while the pressures in panel B were obtained during maximal lung inflation and inspiratory pause. Both curves are ensemble averages after referencing to the RCd. The curve in panel B has been shifted by 2 mm to demonstrate the alignment with the proximal and distal peaks in panel A.