Ischiocavernosus muscle

The ischiocavernosus muscle (erectores penisorerector clitoridis in older texts) is a muscle just below the surface of the perineum, present in both men and women.^[1]

Structure

It arises by tendinous and fleshy fibers from the inner surface of the tuberosity of the ischium, behind the crus penis; and from the inferior pubic rami 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

In females, the ischiocavernosus muscle assists with clitoral erection.^[2] In male placental mammals, it helps to stabilize the erect penis^[3] by compressing the crus penis and retarding the return of blood through the veins.

Additional images

Right hip bone, internal surface
Muscles of the female perineum (ischiocavernosus visible at upper left)
The superficial branches of the internal pudendal artery

References

This article incorporates text in the public domain from page 428 of the 20th edition ofGray's Anatomy(1918)

↑Maclean, Allan; Reid, Wendy (2011). "40". In Shaw, Robert (ed.). Gynaecology. Edinburgh New York: Churchill Livingstone/Elsevier. pp. 599–612. ISBN 978-0-7020-3120-5; Access provided by the University of Pittsburgh{{cite book}}: CS1 maint: postscript (link)
↑Dean O'Loughlin, Valerie; Stouter Bidle, Theresa; McKinley, Michael P. (2022). "Muscular System: Axial and Appendicular Muscles". Anatomy and Physiology: An Integrative Approach (Fourth ed.). McGraw Hill. p. 395. ISBN 9781264265411.
↑Dixson, Alan F. (2021-06-03). Mammalian Sexuality: The Act of Mating and the Evolution of Reproduction. Cambridge University Press. ISBN 978-1-108-69949-5.

External links

Anatomy photo:41:11-0101 at the SUNY Downstate Medical Center - "The Female Perineum: Muscles of the Superficial Perineal Pouch"
Anatomy figure: 41:05-01 at Human Anatomy Online, SUNY Downstate Medical Center - "Muscles of the female superficial perineal pouch."
Anatomy figure: 42:04-01 at Human Anatomy Online, SUNY Downstate Medical Center - "Muscles of the male superficial perineal pouch. "

[Maclean2011-1] Maclean, Allan; Reid, Wendy (2011). "40". In Shaw, Robert (ed.). Gynaecology. Edinburgh New York: Churchill Livingstone/Elsevier. pp. 599–612. ISBN 978-0-7020-3120-5; Access provided by the University of Pittsburgh{{cite book}}: CS1 maint: postscript (link)

[2] Dean O'Loughlin, Valerie; Stouter Bidle, Theresa; McKinley, Michael P. (2022). "Muscular System: Axial and Appendicular Muscles". Anatomy and Physiology: An Integrative Approach (Fourth ed.). McGraw Hill. p. 395. ISBN 9781264265411.

[3] Dixson, Alan F. (2021-06-03). Mammalian Sexuality: The Act of Mating and the Evolution of Reproduction. Cambridge University Press. ISBN 978-1-108-69949-5.

[1]

[2]

[3]

Structure

Function

Additional images

References

External links

関連するトピック

perineum

ischium

crus penis

inferior pubic rami