Mechanics of human sexuality

The mechanics of sex, or more formally the biomechanics of human sexuality, is the study of the mechanics related to human sexual activity. Examples of topics include the biomechanical study of the strength of vaginal tissues^[1] and the biomechanics of male erectile function.^[2] The mechanics of sex under limit circumstances like sex at zero-gravity in outer space are also being studied.^[3]

Pioneering researchers have been able to study the male and female genitals during coitus with ultrasound technology in 1992 and magnetic resonance imaging (MRI) in 1999, mapping the anatomy of intercourse and taking images illustrating the fit of male and female genitals.^[4][5] In the research using MRI, researchers imaged couples performing sexual intercourse inside an MRI machine.^[5] The magnetic resonance images also showed that the penis has the shape of a boomerang, that one third of its length consists of the root of the penis, and that the vaginal walls wrap snugly around it.^[5][6]

Notes

Further reading

• Bondil, P; Costa, P; Daures, JP; Louis, JF; Navratil, H (1992). "Clinical study of the longitudinal deformation of the flaccid penis and of its variations with aging". European Urology 21 (4): 284–6. PMID 1459150. 
• Traxer, Olivier; Haab, François; Anidjar, Maurice; Gattegno, Bernard; Cussenot, Olivier; Thibault, Philippe (1999). "Comparaison des propriétés biomécaniques de l'ancrage vaginal dans les suspensions du col vésical selon la technique de Burch et une technique percutanée [Comparison of biomechanical properties of the vaginal fixation in bladder neck suspensions according to the Burch technique and a percutaneous technique]" (in French). Progrès en Urologie 9 (4): 727–30. PMID 10555228. http://www.urofrance.org/fileadmin/documents/data/PU/1999/PU-1999-00090727/TEXF-PU-1999-00090727.PDF.