bulbocavernosus

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bulbocavernosus

[¦bəl·bō‚ka·vər′nō·səs]
(anatomy)
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In this latter case, they originate on the rectum and pass along the ventral surface of the penis, eventually becoming enmeshed with the bulbospongiosus muscle, and ending at the tip (glans) of the penis.
The structure of the tunica muscularis varies along the length of the duct, ranging between three layers near the bladder and a striated urethral muscle in more distal sections, where it becomes continuous with the bulbospongiosus muscle.