Ischiocavernosus muscle
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| Ischiocavernosus muscle | ||
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| Muscles of the female perineum. (Ischiocavernosus visible at upper right.) | ||
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| Muscles of male perineum. (Ischiocavernosus visible at upper left.) | ||
| Latin | musculus ischiocavernosus | |
| Gray's | subject #120 428 | |
| Origin: | ||
| Insertion: | ||
| Artery: | Perineal artery | |
| Nerve: | pudendal nerve | |
| Action: | ||
| Dorlands/Elsevier | m_22/12549534 | |
The ischiocavernosus muscle is a muscle just below the surface of the perineum, present in both men and women.
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[edit] Function
It helps flex the anus, and (in males) stabilize the erect penis or (in females) tense the vagina. Kegel exercises (also known as pelvic floor exercises) can help tone the ischiocavernosus muscle.
Ischiocavernosus compresses the crus penis, and retards the return of the blood through the veins, and thus serves to maintain the organ erect.
[edit] Fibers
It arises by tendinous and fleshy fibers from the inner surface of the tuberosity of the ischium, behind the crus penis; and from the rami of the pubis and ischium on either side of the crus.
From these points fleshy fibers succeed, and end in an aponeurosis which is inserted into the sides and under surface of the crus penis.
[edit] Additional images
 Right hip bone. Internal surface. |
 Coronal section of anterior part of pelvis, through the pubic arch. Seen from in front. |
 The superficial branches of the internal pudendal artery. |
[edit] External links
- GPnotebook -194314163
- LUC isho
- SUNY Labs 41:11-0101 - "The Female Perineum: Muscles of the Superficial Perineal Pouch"
- SUNY Figs 41:05-01 - "Muscles of the female superficial perineal pouch."
- SUNY Figs 42:04-01 - "Muscles of the male superficial perineal pouch. "
- Intelihealth page with good diagram
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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BACK: splenius: (capitis - cervicis) - erector spinae (iliocostalis - longissimus - spinalis) - latissimus dorsi
transversospinales: (semispinalis dorsi - semispinalis cervicis - semispinalis capitis - multifidus - rotatores) - interspinales - intertransversarii
SUBOCCIPITAL: rectus capitis posterior (major, minor) - obliquus capitis (inferior, superior)
CHEST: intercostales (external, internal, innermost) - subcostales - transversus thoracis - levatores costarum - serratus posterior (inferior, superior) - diaphragm
ABDOMEN: obliques (external, internal) - transversus abdominis - rectus abdominis - pyramidalis - cremaster - quadratus lumborum
PELVIS: levator ani (iliococcygeus, pubococcygeus, puborectalis) - coccygeus
PERINEUM: sphincter ani (externus, internus) - superficial perineal pouch (transversus perinei superficialis - bulbospongiosus - ischiocavernosus) - deep perineal pouch (transversus perinei profundus, sphincter urethrae membranaceae)
