Penis Size Statistics
Statistic Verification
Source: Journal for Sex Research (vol. 24,pp. 177-183) , World Health Organisation
Research Date: 5.16.2012
Penis Size Averages Inches
Average American penis size in length while flacid 3.89 inches
Average American penis size in length while erect 6.21 inches
Average penis circumference while flacid 3.75 inches
Average penis circumference while erect 4.85 inches
Semen Production Percentages Percent
Testicles and epididymes 5 %
Seminal vesicles 62 %
Prostate gland 28 %
Bulbourethral and urethral glands 5 %
The average volume of semen produced at ejaculation 3 ml
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