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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

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