Human Body

It takes around 130 ml of blood for a penis to stiffen. The circulation rate must be very high at 2 ml per second. The small arteries, with a diameter of around 0.5 mm when the penis is resting, will double their diameter to convey the blood.

rate this fact


report this fact


by TimeWasters, LLC:
7,828 interesting facts by Facts&Co
180,527 famous quotes by Quotes&Co
62,947 proverbs from all over the world by Proverbs&Co

Traffic analysis by Web-Stat