You already do it that a phallus has arteries to bring blood to its erectile tissue , and veins that take the blood away again when it hark back to its normal flaccid state . You may not bed that there ’s another Seth of vessels tucked under its skin . We just got our first good look at them .

As blood moves through capillaries , some of its plasma gets squeezed out of the tube and into the torso ’s tissues . The lymphatic system collects that fluid and returns it to the veins ; if the vessels are blocked , or more plasma enters a tissue than the lymph vessel can carry out , the fluid can back up and swell that tissue up like a water supply balloon .

That ’s not at all pleasant when the tissue paper in question is a penis . I ’ll spare you the photos ( thoughyou can wait here if you really require to know what it looks like ) . But no one knew much about how the lymphatic vessels were arranged underneath the skin , which limited treatments for hump and increased the risk of ramification during surgery .

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So in a flinch - induce tomography experimentation , Yan Liu and his colleague at the Third Military Medical University in Chongqing , China build up a function of the penial lymphatic system using MRI images captivate from Volunteer who agreed to have a medical contrast agent interject under their prepuce .

The results , write in the Anatomical Record this workweek , show that lymphatic vessels in the glans and foreskin form a web across the upper surface of the penis before merge to form larger vessels that send fluid into lymph nodes embedded in the groin . The net is n’t connected to the erectile tissue paper in the center of the member , suggesting that those tissues have their own independent set of lymphatic vas .

And that also tells us that there are three distinct routes to end up with a swollen member , only one of which is any fun .

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[ Long et al . 2015 ]

Image fromLong et al . 2015

meet the author at[email   protected ] .

Photo: Jae C. Hong

ImagingScience

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