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The pudendal nerve is the main nerve of the perineum. [1]: 274 It is a mixed (motor and sensory) nerve and also conveys sympathetic autonomic fibers.It carries sensation from the external genitalia of both sexes and the skin around the anus and perineum, as well as the motor supply to various pelvic muscles, including the male or female external urethral sphincter and the external anal sphincter.
The deep transverse perineal muscle is innervated by the pudendal nerve. The function of the muscle is fixation of the perineal body (central tendon of perineum), support of the pelvic floor, expulsion of semen in males and last drops of urine in both sexes. [2]
The pudendal canal (also called Alcock's canal) is an anatomical structure formed by the obturator fascia (fascia of the obturator internus muscle) lining the lateral wall of the ischioanal fossa. The internal pudendal artery and veins , and pudendal nerve pass through the pudendal canal, and the perineal nerve arises within it.
The perineal nerve is a branch of the pudendal nerve. [1] [2] It lies below the internal pudendal artery.It accompanies the perineal artery.It passes through the pudendal canal for around 2 or 3 cm. [1] [2] Whilst still in the canal, it divides into superficial branches and a deep branch. [1]
This is a list of human anatomy mnemonics, categorized and alphabetized.For mnemonics in other medical specialties, see this list of medical mnemonics.Mnemonics serve as a systematic method for remembrance of functionally or systemically related items within regions of larger fields of study, such as those found in the study of specific areas of human anatomy, such as the bones in the hand ...
The ischial spine can serve as a landmark in pudendal anesthesia, as the pudendal nerve lies close to the ischial spine. [3] [4] Additional images
Pudendal nerve entrapment is an example of nerve compression syndrome. Pudendal neuralgia (PN) refers to neuropathic pain along the course of the pudendal nerve and in its distribution. This term is often used interchangeably with pudendal nerve entrapment. However, it has been suggested that the presence of symptoms of pudendal neuralgia alone ...
The nerves supplying the corpora cavernosa consist of two sets, the lesser and greater cavernous nerves, which arise from the forepart of the prostatic plexus, and, after joining with branches from the pudendal nerve, pass forward beneath the pubic arch. Injury to the prostatic plexus (during prostatic resection for example) is highly likely to ...