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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Arch Oral Biol. 2019 May 20;105:35–45. doi: 10.1016/j.archoralbio.2019.05.015

Figure 8.

Figure 8.

Plots of changing a) sarcomere lengths (Ls); b) fiber length (Lf); and c) PCSA as a function of percent fiber stretch for the anterior superficial masseter. Fiber stretch is interpolated in 10% increments from occlusion to 90%. For every 10% increase in stretch from occlusion, sarcomeres lengthen by ~8–9%, and fibers lengthen between 1–3 mm, depending on muscle region. Sarcomere and fiber lengths measured in vitro at maximum jaw gapes fall within our estimated ranges for sarcomeres stretched by as much as 70–80%, and fiber stretched by as much as 90%, respectively, from occlusion. (Supplementary Table S3).