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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Anat Rec (Hoboken). 2016 Jan 30;299(3):385–399. doi: 10.1002/ar.23309

Figure 9.

Figure 9

Drawings of the external genitalia of male and female rat, mouse, human and mole (Scapanus latimanus). The upper row depicts penises of the three species. The lower row contains mole (Scapanus latimanus) male and female drawings that are to morphometric scale as per the Results text. The mouse and the rat have two prepuces: (a) an external protective prepuce, which creates a voluminous space housing the penis and (b) an internal prepuce integral to the penis itself, which is similar to that of humans. The external prepuce creates the perineal appendage seen externally in both rats, mice and Scapanus latimanus. The arrangement of structures for Scapanus latimanus is similar to that of the mouse and rat with the exception of the absence of an internal prepuce. Note that in Scapanus latimanus the prepuce is non-integral to both the penis and clitoris.