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The superficial pouch contains three thin muscles:
ischiocavernosus muscle
, that covers the corpora cavernosa or crus of the penis
bulbospongiosus muscle
, that covers the bulb of the penis
superficial transverse perineal muscle
, that lies on the posterior edge of the urogenital diaphragm.
The bulbospongiosus muscle and ischiocavernosus muscles overly the root of the penis (
Figure 42.4
).