Perineal body
| Perineal body | |
|---|---|
 Muscles of the female perineum, with perineal body marked by red circle | |
 Muscles of male perineum | |
| Details | |
| Latin |
Corpus perineale, centrum tendineum perinei |
| Identifiers | |
| Gray's | p.1185 |
| Dorlands /Elsevier | 12260742 |
| TA | A09.5.00.005 |
| FMA | 20274 |
| Anatomical terminology | |
The perineal body (or central tendon of perineum) is a pyramidal fibromuscular mass in the middle line of the perineum at the junction between the urogenital triangle and the anal triangle. It is found in both males and females. In males, it is found between the bulb of penis and the anus; in females, is found between the vagina and anus, and about 1.25 cm in front of the latter.
The perineal body is essential for the integrity of the pelvic floor, particularly in females. Its rupture during vaginal birth leads to widening of the gap between the anterior free borders of levator ani muscle of both sides, thus predisposing the woman to prolapse of the uterus, rectum, or even the urinary bladder.
Attachments
At this point, the following muscles converge and are attached:
- External anal sphincter
- Bulbospongiosus muscle
- Superficial transverse perineal muscle
- Anterior fibers of the levator ani
- Fibers from male or female external urinary sphincter
- Deep transverse perineal muscle
See also
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
External links
- Anatomy photo:42:16-0201 at the SUNY Downstate Medical Center — "The Male Perineum and the Penis: Muscles of the Superficial Perineal Pouch"
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