Bulbospongiosus muscle
The bulbospongiosus muscles (in older texts bulbocavernosus and, for female muscle, constrictor cunni) are a subgroup of the superficial muscles of the perineum. They have a slightly different origin, insertion and function in males and females. In males, these muscles cover the bulb of the penis, while in females, they cover the vestibular bulbs.
| Bulbospongiosus muscle | |
|---|---|
Muscles of male perineum (bulbocavernosus visible in red) | |
Muscles of the female perineum (bulbocavernosus visible in red) | |
| Details | |
| Origin | Median raphe |
| Artery | Perineal artery |
| Nerve | Pudendal nerve |
| Actions | In males, empties the urethra; in females, clenches the vagina |
| Identifiers | |
| Latin | musculus bulbospongiosus |
| TA98 | A09.5.02.005 |
| TA2 | 2418 |
| FMA | 19729 |
| Anatomical terms of muscle | |
In both sexes, they are innervated by the deep or muscular branch of the perineal nerve, which is a branch of the pudendal nerve.
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