Everyone is tweeting the TED penis talk

Diane Kelly, from her departmental web page at U Mass

Diane Kelly: What we didn’t know about penis anatomy

Fun talk. She proves that anatomy still has much to teach. She also has a blog

In the TED talk, she discusses hydrostatic skeletons. These consist of fluid-filled cavities supported by a helical weave of collagen. In most animals with such skeletons, the helical weave is at a 45 degree angle to the axis of the shaft. This allows compression and flexation. Great if you are a worm, not helpful if you are a penis on a mission. She discovered, during her Ph.D., that the penis aligns the helical weave along the axis. This gives the needed rigidity to the structure.

Hydrostatic skeletons consist of fluid-filled closed chambers. Internal pressures generated by muscle contractions cause movement as well as maintain the shape of the animals. Caption text clipped from source webpage (linked to image). Images from Purves et al., Life: The Science of Biology, 4th Edition, by Sinauer Associates (www.sinauer.com)


Posted on June 6, 2012, in Uncategorized and tagged . Bookmark the permalink. Leave a comment.

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