Palmaris Longus: The Muscle You Might Not Have | Corporis

About 15% of humans don't have a muscle in their forearms called the Palmaris Longus. As a muscle, it's pretty useless. But still, why do some people have it while others don't?
What mechanism is behind the whole thing? In this video, I explain why there's still variation among different bodies and why this obsolete muscle exists still.

☠️NONE OF THE INFORMATION IN THIS VIDEO SHOULD BE USED AS MEDICAL ADVICE OR OPINION. IT IS FOR GENERAL EDUCATION AND ENTERTAINMENT☠️

🔗 L I N K S 🔗
📱Instagram: https://www.instagram.com/patkellyteaches/
🐦Twitter: https://twitter.com/PatKellyTeaches
💰Patreon: https://www.patreon.com/corporis

📽 O T H E R V I D E O S 📽
⚰️Medical History playlist: https://www.youtube.com/playlist?list=PL2rpvfNeooNGcIesiheCNuPvuQyRlRavb
🔬Anatomy Basics playlist: https://www.youtube.com/playlist?list=PL2rpvfNeooNE5E4jKX9JOrXITW-kIfZCc
💪Kinesiology and Biomechanics playlist: https://www.youtube.com/playlist?list=PL2rpvfNeooNGkKlDT2ctqTpPtJgAPOpjx

📜 S O U R C E S 📜
Grip Strength Unaffected By PL Removal (2005)
http://journals.sagepub.com/doi/10.1016/J.JHSB.2005.03.011
Heredity of PL (2013)
http://jms.org.br/PDF/v30n4a08.pdf
Palmaris Longus comparison (2014)
https://www.hindawi.com/journals/bmri/2014/178906/#B21
The changing upper extremity (2014)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4059683/#!po=3.33333
Percentages of PL (2016)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4596262/?report=reader#!po=23.3333
https://www.flickr.com/photos/internetarchivebookimages/20351083601
Lemur Hand By Alex Dunkel (Maky) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=12468465
Chimpanzee By © Hans Hillewaert /, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=16267899
https://en.wikipedia.org/wiki/Ring-tailed_lemur#/media/File:Ring_tail_lemur_leaping.JPG
https://en.wikipedia.org/wiki/Ring-tailed_lemur#/media/File:Lemur_catta_1.jpg
https://www.youtube.com/watch?v=oZXwD9i0bcQ

💊A B O U T 💊
Hi, I’m Patrick. I’m a freelance science writer based in the San Francisco Bay Area. I hold a bachelor’s degree in Athletic Training and a master’s in clinical exercise physiology. I used to work in the clinical setting as a certified athletic trainer, physical therapy aide, and a certified strength and conditioning specialist. After working in the clinical setting, I went back to school and became a teacher. The goal of my content is to help normal people, not just pre-med students, learn about the human body. That might mean explaining a topic from an anatomy class or exploring a topic from medical history.

💻 C O N T A C T 💻
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patkellyteaches [at] gmail.com

#corporis #anatomy #medicalhistory

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