bulbospongiosus

[ bŭl′bō-spŏn′jē-ōsəs, -spŭn′- ]

n.

A muscle with origin in the inferior fascia of the urogenital diaphragm, the corpus cavernosum of the clitoris or the penis, and in the dorsum of the clitoris or the bulb of the penis; with insertion to the central tendon of the perineum and in the male also to the median raphe on the bulb of the penis; and whose action controls the weak sphincter of the vagina or constricts the bulbous urethra.bulbocavernosus

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.