Origin
The bulbospongiosus originates from the median raphe.
Insertion
The fibers extend and partly spread to the urogenital fascia around the corpus cavernosum penis, corpus cavernosum urethrae, and a few fibers end into a tendinous expansion.
Blood supply
Perineal artery.
Nerve supply
Pudendal nerve.
Action
In males, it helps for erection of penis, ejaculation, and for the feeling of orgasm. In females it helps for the erection of clitoris and feeling of orgasm and closes the vagina. It’s also helpful while urinating.
Disease/Injury
Injury to bulbospongiosus muscle can cause problems of erection of penis; it may happen due to vigorous masturbation or any other injury.
Muscle Exercise
To strengthen the bulbospongiosus muscle, you can practice Kegel’s exercise.
Interesting facts
As this muscle works at the end of urination process to empty the urine, people who suffer from dribbling of urine post urination may have injured their bulbospongiosus muscle.
