Ischiocavernosus muscle

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Ischiocavernosus muscle
Ischiocavernosus-female.png
Muscles of the female perineum (ischiocavernosus visible at upper right)
Ischiocavernosus-male.png
Muscles of male perineum (ischiocavernosus visible at upper left)
Details
Origin Ischial Tuberosity
Insertion Crus of penis
Artery Perineal artery
Nerve Pudendal nerve
Actions Assists the bulbospongiosus muscle (in males, empties the urethra; in females, clenches the vagina)
Identifiers
Latin musculus ischiocavernosus
Dorlands
/Elsevier
m_22/12549534
TA A09.5.02.004
FMA 19730
Anatomical terms of muscle

The ischiocavernosus muscle is a muscle just below the surface of the perineum, present in both men and women.[1]

Structure[edit]

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.

Function[edit]

It helps flex the anus, and (in males) stabilize the erect penis or (in females) tense the vagina during orgasm. 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.

Additional images[edit]

References[edit]

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. ^ Maclean, Allan; Reid, Wendy (2011). "40". In Shaw, Robert. Gynaecology. Edinburgh New York: Churchill Livingstone/Elsevier. pp. 599–612. ISBN 978-0-7020-3120-5; Access provided by the University of Pittsburgh 

External links[edit]