Figure 3 - Strain-energy relationship of the cricopharyngeus (CP) muscle.

From the following article

Upper esophageal sphincter

Ivan M. Lang

GI Motility online (2006)



This graph shows that the optimum length (LO) of the CP is approximately 1.7 times its resting length (LR), whereas in other striated muscles LO = LR. This relationship illustrates the large degree of elasticity of the CP compared to other striated muscles. (Source: Medda et al.,26 with permission of the American Physiological Society.)

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