Function of longitudinal vs circular muscle fibers in esophageal peristalsis, deduced with mathematical modeling

Figure 11 Primary result from Pal & Brasseur[18]. A: Mathematical model calculation of pressure during esophageal peristaltic transport with different levels of local longitudinal shortening, from the measured physiological level, to no shortening; B: Calculation of peak closure pressure as a function of separation △ between the circular muscle and longitudinal muscle contraction waves (Figure 10).