- Mechanics of human sexuality
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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
- ^ Cosson, Michel; Lambaudie, Eric; Boukerrou, Malik; Lobry, Pierre; Crépin, Gilles; Ego, Anne (2004). "A biomechanical study of the strength of vaginal tissues. Results on 16 post-menopausal patients presenting with genital prolapse". European journal of obstetrics, gynecology, and reproductive biology 112 (2): 201–5. doi:10.1016/S0301-2115(03)00333-6. PMID 14746960.
- ^ Udelson, Daniel (2007). "Biomechanics of male erectile function". Journal of the Royal Society Interface 4 (17): 1031–48. doi:10.1098/rsif.2007.0221.
- ^ Boyle, Alan (July 24, 2006). "Outer-space sex carries complications". MSNBC. http://www.msnbc.msn.com/id/14002908/.
- ^ Silverberg, Cory (August 02, 2010). "Anatomy of Intercourse". About.com. http://sexuality.about.com/od/anatomyresponse/a/sex_research1.htm.
- ^ a b c Schultz, Willibrord Weijmar; van Andel, Pek; Sabelis, Ida; Mooyaart, Eduard (1999). "Magnetic resonance imaging of male and female genitals during coitus and female sexual arousal". BMJ 319 (7225): 1596–600. PMC 28302. PMID 10600954. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=28302.
- ^ Stuttaford, Thomas; Godson, Suzi (October 6, 2007). "Taking the first steps". The Times. http://www.timesonline.co.uk/tol/life_and_style/health/expert_advice/article2595671.ece.
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.
Human physiology and endocrinology of sexual reproduction Menstrual and estrous cycle Gametogenesis Spermatogenesis (spermatogonium, spermatocyte, spermatid, sperm) · Oogenesis (oogonium, oocyte, ootid, ovum) · Germ cell (gonocyte, gamete)Human sexual behavior Sexual intercourse · Masturbation · Erection · Orgasm · Ejaculation · Insemination · Fertilisation/Fertility · Implantation · Pregnancy · Postpartum period · Mechanics of sexLife span Egg (biology) Reproductive endocrinology
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