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Table 3 Pelvic floor striated muscle sex difference summary

From: Sex differences in lower urinary tract biology and physiology

Species Sex Histologic studies References
Rat Female Developing LA muscle contains fewer motor units with smaller cross-sectional areas (89.2 μm2)
Fewer number of satellite cells in the neonatal LA muscle
Tobin et al. [74]
Niel et al. [75]
Male Developing LA muscle contains more motor units with greater cross-sectional areas (120.8 μm2)
Greater number of satellite cells in the neonatal LA muscle
 
Human Female Developing LA muscle is thin, and its bundles are integrated with connective tissue Fritsch et al. [76]
Male Developing LA muscle constitutes a thick, muscular layer