Figure 1
From: Morphology of muscle attachment sites in the modern human hand does not reflect muscle architecture

Correlations of entheseal length and muscle architectural variables.
From left to right and top to bottom, plots show entheseal length versus muscle mass, muscle-tendon length (MTU), fiber length (Lf) and physiological cross-sectional area (PCSA). Lines designate predicted linear regression fits, for visualization purposes only and were calculated separately from first and fifth metacarpal data. The 95% confidence intervals of those linear regression fits are shown in grey.