COITUS

The missionary position, the most common human sex position; depicted by Edouard - Henri Avril (1849 -1928)

19 – century erotic interpretation of Hardrian & Antinous engaged by anal intercourse by Edouard - Henri Avril

Edouard - Henri Avril’s depiction of a woman on top position, a position is more likely to stimulate the clitoris

Edouard - Henri Avril painting depicting cunninilgus in the life of Sappho

18 century erotic painting from India

Erotic painting on ancient Greek Kylix

Ancient Greek pottery art

A statue of Satyr in the Athens Archaeological Museum.

Sex in animals A pair of lions (Kenya) ; Mating house flies)

Developments that will change sex (2O13) Viberect It is the first erectile dysfunction machine approved by FDA

Developments that wsill change sex (2O13) Viagra condom Manufacturers coated the inside of condom with a gel used to increase the blood circulation ( viagra)

The penis of Rasputin measuring 28 The penis of Rasputin measuring 28.5 cm (about 11 inches) in st Petersburg Museum example of gender obsession gone wrong ending terribly for owner of this member.

Grigori Rasbutin (1869 – 1916)

The copulation as imagined and drawn by Leonardo da Vinci BMJ 319: 1596, 1999

Midsagittal image of anatomy of sexual intercourse Dickinson, R. L Midsagittal image of anatomy of sexual intercourse Dickinson, R. L. Human sex anatomy, a topographic hand atlas London Balliere 1949: 84

Midsagittal image of sexual response in multiparous woman Left : at rest center: preorgasmic phase, right 2O minutes after orgasm Schultz, W.W. BMJ 319: 1596 , 1999 The magnetic resonance image has shown that the penis during intercourse in the missionary position has the shape of boomerang & not of an S as drawn by Dickenson In contrast to Master & Johnson there is no increase in size of uterus during sexual arousal During female sexual arousal without intercourse, the uterus rises & the anterior vaginal wall lengthen.

Ejaculation @ Semen & fertilization @ Semen can transmit diseases e Ejaculation @ Semen & fertilization @ Semen can transmit diseases e.g HIV virus causing AIDS @ For espionage as it made a good invisible ink, can be seen by UV light. @ In each ejaculate, it contains the same amount of protein equal to white of an egg.

Female orgasm

Refractory period (recovery after orgasm)

G SPOT The G spot is difficult to be stimulated in the missionary position. Women needs direct clitoral stimulation to orgasm and G spot stimulation . These may be best applied by using both by manual stimulation and vaginal penetration. Although the G spot has been studied since 194Os,disagreement persist over its existence as distinct structure, definition, & location. Ultrasound studies has found physiological evidence of the G spot in women who report having orgasm during intercourse. It is also hypothesized that the G spot is an extension of clitoris and that this is the cause of vaginal orgasm ( Kilchcvsky, A et al. J. of sexual medicine, January 2O12 ; O’connell, H.,E. J. of Urology 174 : 1189, 2OO5). Sexueologists are concerned that women may consider themselves to be dysfunctional if they do not experience the G spot & emphasize that it is normal to experience it. Some women has undergone a plastic surgery operation called G spot amplification in an effort to enhance its sensitivity.. The FDA and the American Medical association & the American college of obstetrician & gynecologist said that no prove to account of urethral safety or effectiveness of this treatment

The Grafenberg spot or G spot is a been shaped area in the vagina (No It is located 2.5 -7.5cm up the front (anterior vaginal) wall between the vaginal opening & the urethra. I

The best sex positions that makes her orgasm fast through the G spot

Grigori Rasbutin (1869 – 1916)