Corpus: Bulbospongiosus muscle: Unterschied zwischen den Versionen
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==Definition== | ==Definition== | ||
The '''bulbospongiosus muscle''' is a [[Corpus:Skeletal muscle|skeletal muscle]] that forms part of the [[Corpus:Pelvic floor|pelvic floor]] [[Corpus:Muscle|musculature]]. | The '''bulbospongiosus muscle''' is a [[Corpus:Skeletal muscle|skeletal muscle]] that forms part of the [[Corpus:Pelvic floor|pelvic floor]] [[Corpus:Muscle|musculature]]. | ||
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The bulbospongiosus muscle is located in front of the [[Corpus:Anus|anus]], in the center of the [[Corpus:Perineum|perineum]], within the [[Corpus:superficial perineal pouch|superficial perineal pouch]]. It originates at the perineal tendon center and the [[Corpus:Perineal raphe|perineal raphe]]. The [[Corpus:Muscle fiber|muscle fibers]] radiate symmetrically anterolaterally, resembling a fan, into the inferior fascia of the [[Corpus:Urogenital diaphragm|urogenital diaphragm]]. In men, these fibers also attach to the dorsum of the [[Corpus:penis|penis]], while in women, they attach to the fascia of the [[Corpus:Corpus clitoridis|corpus clitoridis]]. | The bulbospongiosus muscle is located in front of the [[Corpus:Anus|anus]], in the center of the [[Corpus:Perineum|perineum]], within the [[Corpus:superficial perineal pouch|superficial perineal pouch]]. It originates at the perineal tendon center and the [[Corpus:Perineal raphe|perineal raphe]]. The [[Corpus:Muscle fiber|muscle fibers]] radiate symmetrically anterolaterally, resembling a fan, into the inferior fascia of the [[Corpus:Urogenital diaphragm|urogenital diaphragm]]. In men, these fibers also attach to the dorsum of the [[Corpus:penis|penis]], while in women, they attach to the fascia of the [[Corpus:Corpus clitoridis|corpus clitoridis]]. | ||
The bulbospongiosus muscle surrounds the [[Corpus: | The bulbospongiosus muscle surrounds the [[Corpus:vestibular bulbs|vestibular bulbs]] in women and the [[Corpus:Bulbus penis|bulbus penis]] and adjacent parts of the [[Corpus:Corpus spongiosum penis|corpus spongiosum penis]] in men. | ||
==Innervation== | ==Innervation== | ||
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==Function== | ==Function== | ||
In men, the bulbospongiosus muscle functions to compress and empty the [[Corpus:uretha|urethra]] after urination and supports or intensifies | In men, the bulbospongiosus muscle functions to compress and empty the [[Corpus:uretha|urethra]] after urination and supports or intensifies ejaculation. In women, the muscle increases pressure on the [[Corpus:greater vestibular glands|greater vestibular glands]] and constricts the [[Corpus:vaginal vestibule|vaginal vestibule]]. | ||
[[Kategorie:Corpus]] | [[Kategorie:Corpus]] | ||
[[Kategorie:Muscle]] | [[Kategorie:Muscle]] | ||
[[Kategorie:Pelvis]] | [[Kategorie:Pelvis]] | ||
Aktuelle Version vom 21. August 2024, 07:50 Uhr
Definition
The bulbospongiosus muscle is a skeletal muscle that forms part of the pelvic floor musculature.
Anatomy
The bulbospongiosus muscle is located in front of the anus, in the center of the perineum, within the superficial perineal pouch. It originates at the perineal tendon center and the perineal raphe. The muscle fibers radiate symmetrically anterolaterally, resembling a fan, into the inferior fascia of the urogenital diaphragm. In men, these fibers also attach to the dorsum of the penis, while in women, they attach to the fascia of the corpus clitoridis.
The bulbospongiosus muscle surrounds the vestibular bulbs in women and the bulbus penis and adjacent parts of the corpus spongiosum penis in men.
Innervation
The muscle is innervated by the perineal rami of the pudendal nerve, originating from the sacral plexus (S2-S4).
Arterial supply
The arterial supply to the bulbospongiosus muscle is provided by the perineal artery.
Function
In men, the bulbospongiosus muscle functions to compress and empty the urethra after urination and supports or intensifies ejaculation. In women, the muscle increases pressure on the greater vestibular glands and constricts the vaginal vestibule.