Why Does Getting Kicked in the Groin Hurt SO Much?

Captions provided by CCTubes – Captioning the Internet! Getting kicked anywhere hurts, but getting kicked in the groin REALLY hurts for a few different reasons.

Hosted by: Hank Green
———-
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
———-
Dooblydoo thanks go to the following Patreon supporters: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, D.A. Noe, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Nicholas Smith, Tim Curwick, Alexander Wadsworth, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George
———-
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
———-
Sources:
http://mentalfloss.com/article/31182/why-does-getting-hit-testicles-hurt-so-much
https://www.ncbi.nlm.nih.gov/pubmedhealth/PMHT0024363/
http://www.msdmanuals.com/en-au/home/women-s-health-issues/biology-of-the-female-reproductive-system/female-external-genital-organs
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2964977/
https://www.ncbi.nlm.nih.gov/pubmed/23196
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327510/ https://canvas.brown.edu/courses/851434/pages/neural-circuits
http://www.d.umn.edu/~jfitzake/Lectures/DMED/Somatosensation/Somatosensation/ReferredPain.html
https://www.researchgate.net/publication/297738179_Convergent_referred_pain_mechanisms
http://www.paincenter.pitt.edu/sites/default/files/documents/Craigpainreview.pdf
———–
Images:
https://en.wikipedia.org/wiki/Jockstrap#/media/File:Cricket-Abdominal-Guard.png
https://en.wikipedia.org/wiki/Sensory_neuron#/media/File:Structure_of_sensory_system_(4_models)_E.PNG
https://commons.wikimedia.org/wiki/File:1506_Referred_Pain_Chart.jpg