Structure.
- Origin: perineal body of perineum.
- Insertion: perineal membrane of deep muscles of perineum corpus spongiosum of penis, and deep fascia on dorsum of penis in male; pubic arch and root and dorsum of clitoris in female.
Function.
- Concentric action: aids in expelling urine, propel semen, assists in erection, constricts vaginal orifice and assists in erection of clitoris in female.
- Isometric action:
- Innervation: perineal branch of pudendal nerve of sacral plexus.
- Arterial supply: internal pudendal artery and its branch (perineal artery).
Clinical Significance.
Bulbospongiosus. Used with permission by 3D4Medical.
References
Biel, A. (2015). Trail guide to the body: A hands-on guide to locating muscles, bones and more.
Clark, M., Lucett, S., Sutton, B. G., & National Academy of Sports Medicine. (2014). NASM essentials of corrective exercise training. Burlington, MA: Jones & Bartlett Learning.
Jenkins, G., & Tortora, G. J. (2012). Anatomy and Physiology: From Science to Life, 3rd Edition International Stu. John Wiley & Sons.
Muscolino, J. E. (2017). The muscular system manual: The skeletal muscles of the human body.
