The Body's Weirdest Reflex Involves Testicles

Institute of Human Anatomy July 26, 2025
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Institute of Human Anatomy

@theanatomylab

About

🧠 The Institute of Human Anatomy ("IOHA") is a private human cadaver laboratory that educates health, fitness, and medical professionals on human anatomy and physiology using real human cadavers. 🏫 IOHA was founded in 2012 by Jeremy Jones and Jonathan Bennion, two brothers-in-law with a passion for helping people. Jeremy is an entrepreneur, and Jonathan is a licensed and actively practicing P.A. in urgent care with over 17 years of experience teaching anatomy and physiology. 🌍 Our mission is to help people live longer, healthier, better lives by teaching as many people as possible about the anatomical wonders of the one thing we all have in common: our amazing bodies!

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See our new digital Anatomy Study Bundles here! https://www.instituteofhumananatomy.com/study-bundles ---- *Follow Us!* https://beacons.ai/instituteofhumananatomy ---- Prepare to discover the astonishing secrets of male anatomy you never knew existed! Jonathan from the Institute of Human Anatomy dives deep into the unique muscles found only in males: the cremaster and dartos. Using real human cadaver dissections, we reveal the unseen forces that constantly orchestrate the movement and temperature of testicles. Understand their jaw-dropping vital role in maintaining optimal temperature for sperm production and male reproductive health. Plus, uncover a fascinating reflex test that reveals more than just anatomy – it's used clinically, and you can even learn how to perform it (for science!). This video will fundamentally change how you see the human body and male physiology. Dive into the intricate details and surprising functions of these crucial muscles! ---- Table of Contents: 0:00 - Intro: Male-Specific Muscles & Testes 0:56 - Testes Location & Cadaver Dissection 1:44 - Spermatic Cord Anatomy: Veins, Arteries, Nerves, and Vas Deferens 2:09 - Scrotum Position Changes & Development in the Womb 2:42 - Ovaries vs. Testes Descent 2:51 - Testes Descent through the Inguinal Canal 3:43 - Cryptorchidism (Undescended Testicle) & Risks 4:26 - Temperature Regulation for Sperm Production 4:48 - Cremaster Muscle: Origin, Function, and Voluntary Control 6:56 - Dartos Muscle: Location, Function, and Involuntary Control 7:50 - The Cremaster Reflex Test: Try it For Science Purposes! 8:56 Thanks for Watching! Common Questions: What are the cremaster and dartos muscles? Why are the testes located outside the body? How do the cremaster and dartos muscles regulate testicular temperature? What is the cremaster reflex, and why is it tested? What is cryptorchidism? How does the spermatic cord relate to these muscles? Can you consciously control the cremaster muscle? What is the significance of testes descent during development? --- Music: https://www.bensound.com License code: AUXISEQ0BQAQRBBW ---- #maleanatomy #malehealth #anatomyeducation #sexualhealthmatters #maleinfertility

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