| perineal muscles | The muscles located in the perineal region; these are the external anal sphincter, the superficial transverse perineal muscle, ischiocavernosus muscle, bulbospongiosus muscle, deep transverse perineal muscle, and sphincter urethrae muscle. Synonym: musculi perinei. (05 Mar 2000) |
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| perineal nerves | The superficial terminal branches of the pudendal nerve, supplying most of the muscles of the perineum (deep branch) as well as the skin of that region (superficial branch). Synonym: nervi perineales. (05 Mar 2000) |
| perineal raphe | The central anteroposterior line of the perineum, most marked in the male, being continuous with the raphe of the scrotum. Synonym: raphe perinei. (05 Mar 2000) |
| perineal region | The regio at the lower end of the trunk, anterior to the sacral region and posterior to the pubic region between the thighs; it is divided into the anal triangle posteriorly and the urogenital triangle anteriorly. Synonym: regio perinealis. (05 Mar 2000) |
| perineal section | Any section through the perineum, either lateral or median lithotomy or external urethrotomy. (05 Mar 2000) |
| perineal spaces | See: deep perineal space, superficial perineal space. (05 Mar 2000) |
| perineal surgery | An operation to remove the prostate gland through an incision made between the scrotum and the anus. (12 Dec 1998) |
| perineal urethrotomy | external urethrotomy |
| Savage's perineal body | central tendon of perineum |
| superficial perineal pouch | The superficial compartment of the perineum; the space bounded above by the perineal membrane (inferior fascia of the urogenital diaphragm) and below by the superficial perineal (Colles') fascia; it contains the root structure of the penis or clitoris and associated musculature, plus the superficial transverse perineal muscle and, in the female only, the greater vestibular glands. Synonym: spatium perinei superficiale, Colles' space, superficial perineal pouch. (05 Mar 2000) |
| superficial perineal space | The superficial compartment of the perineum; the space bounded above by the perineal membrane (inferior fascia of the urogenital diaphragm) and below by the superficial perineal (Colles') fascia; it contains the root structure of the penis or clitoris and associated musculature, plus the superficial transverse perineal muscle and, in the female only, the greater vestibular glands. Synonym: spatium perinei superficiale, Colles' space, superficial perineal pouch. (05 Mar 2000) |
| superficial transverse perineal muscle | <anatomy> An inconstant muscle; origin, ramus of ischium; insertion, central tendon of perineum; action, draws back and fixes the central tendon of the perineum; nerve supply, pudendal (perineal). Synonym: musculus transversus perinei superficialis, superficial transverse muscle of perineum, Theile's muscle. (05 Mar 2000) |
| deep perineal pouch | The region between the perineal membrane and the endopelvic fascia of the floor of the pelvis occupied by the membranous part of the urethra, the bulbourethral gland (in the male), the deep transverse perineal and sphincter urethrae muscles, and the dorsal nerve and artery of the penis or clitoris. Synonym: spatium perinei profundum, deep perineal pouch. (05 Mar 2000) |
| deep perineal space | The region between the perineal membrane and the endopelvic fascia of the floor of the pelvis occupied by the membranous part of the urethra, the bulbourethral gland (in the male), the deep transverse perineal and sphincter urethrae muscles, and the dorsal nerve and artery of the penis or clitoris. Synonym: spatium perinei profundum, deep perineal pouch. (05 Mar 2000) |
| deep transverse perineal | <anatomy, muscle> Origin, ramus of ischium; insertion, with its fellow in a median raphe; action, assists sphincter urethrae with some sphincteric action on vagina in female; nerve supply, pudendal (dorsal nerve of penis/clitoris). Synonym: musculus transversus perinei profundus, deep transverse muscle of perineum, musculus sphincter vaginae, sphincter vaginae. (05 Mar 2000) |