Sex Mechanism

1.1 Vaginal orgasm

1.2 Anal stimulation
1.3 Breast and nipple stimulation
1.4 Spontaneous orgasms
1.5 Involuntary orgasms
1.6 Multiple orgasms
2 Definitions of "orgasm"
3 Evolutionary function of orgasms
3.1 Purpose of female orgasm
3.2 Genetic basis of individual variation
4 Medical aspects of orgasm
4.1 Physiological responses
4.1.1 In men
4.1.1.1 Sensation
4.1.2 In women
4.2 Orgasm and health
4.3 Orgasmic dysfunction
4.4 Drugs and orgasm
5 In tantric sex
6 In other animals