A muscle in the male pelvic region that surrounds the urethra and helps with ejaculation and urination.
From Latin 'bulbus' (bulb) combined with 'cavernosus' (cavernous, hollow). The term describes the muscle's location around the corpus cavernosum, the spongy tissue in the penis.
This muscle is crucial for both urinary control and reproductive function in males—it's one of the few muscles that serves a double duty in completely different bodily systems, which is why anatomists gave it such a specific compound name.
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