The Musculus bulbospongiosus is a transversetouched muscle in the range of the sex organs. With male mammals it surrounds the initial at the beginning of the urethra swelling body (Bulbus penis).
With female mammals the muscle is homologous set for the closing muscle of the Vulva and the sheath forecourt. It is divided therefore also into Musculus constricor vulvae and Musculus constricor vestibuli.
The muscle implements rhythmic contractions with the Ejakulation, whereby it releases a pulsating pressure wave in the urethra swelling body and so that with the Ejakulation supports the output of the seed.
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