Aug 31 Every effect of THC traces back to a specific part of your brain. 🧠 The full video just dropped on YouTube. The prefrontal cortex explains… 4.5M 349.7K 4,083 Sep 29, 2026: 4,414,566 → Oct 5, 2026: 4,519,603 Aug 21 The uterus can stretch from the size of a pear to nearly your ribcage. 🔬 This dissection shows half a uterus next to a fetal specimen at a… 3.7M 301.8K 1,902 1 day Sep 8 You can turn a stomach inside out, and the inside is incredible. 🔬 Flip it over and you see the inner lining, the tunica mucosa, with fold… 2.8M 262.9K 984 Sep 29, 2026: 2,656,603 → Oct 7, 2026: 2,831,036 Sep 21 Period cramps aren't just "part of it." There's real anatomy behind every one. 🔬 The full video just dropped on YouTube. Each month the ut… 2.6M 171.2K 918 Sep 28, 2026: 2,454,906 → Oct 7, 2026: 2,637,270 Aug 26 To understand a heart attack, you have to understand one layer of the heart. 🫀 The outer surface is the epicardium. Peel that away and you… 1.8M 171.6K 299 Sep 30, 2026: 1,683,789 → Oct 7, 2026: 1,755,015 Sep 11 Most ACL tears in football happen with zero contact. Here's why. 🦵 Inside this knee is the ACL, its job is to stop your shin from sliding… 933K 58.2K 236 Sep 30, 2026: 792,700 → Oct 7, 2026: 932,991 Sep 3 Your stomach's exit valve only lets about 3 milliliters through at a time. 🔬 The pyloric sphincter is so tight that anything too big gets… 759.6K 45K 321 Sep 29, 2026: 745,639 → Oct 2, 2026: 759,645 Aug 9 Cancer doesn't start as a lump. It starts with a single line of DNA going off script. 🔬 Cancer is what happens when abnormal cells grow ou… 345.2K 23.3K 100 1 day Aug 29 We dropped gum into real stomach acid to settle the myth. 🔬 Swallowed gum travels down the esophagus into the stomach. Chewing and saliva… 322.5K 26.7K 105 Sep 27, 2026: 301,060 → Oct 3, 2026: 322,527 Aug 23 Ever wonder where poop actually comes from? It starts earlier than you'd think. 💩 It begins in your mouth (the oral cavity), where chewing… 260.8K 20.9K 190 1 day Sep 19 Your biggest arteries don't feed muscle directly. They branch down into something much smaller first. 🔬 Here's an anterior view of a right… 256.6K 25.8K 69 Sep 30, 2026: 218,582 → Oct 7, 2026: 256,635 Sep 12 This tiny gland controls your metabolism, and your brain is pulling the strings. 🦋 The thyroid sits against your trachea, just below your… 250.9K 15K 70 Sep 30, 2026: 240,351 → Oct 7, 2026: 250,915 Sep 10 This is the most powerful chamber in your heart. 🫀 Inside view of the left ventricle, look how thick that wall is. Compare it to the thinn… 232.7K 25.2K 83 Sep 30, 2026: 224,390 → Oct 7, 2026: 232,734 Sep 14 Your body blocks countless infections every day, before a single immune cell even gets involved. 🔬 The full video just dropped on YouTube.… 225.4K 18.8K 43 Sep 30, 2026: 197,593 → Oct 7, 2026: 225,406 Aug 19 Magnesium is the mineral that tells your muscles when to let go. 🔬 Every time a nerve fires or a muscle contracts, electrolytes cross your… 202.2K 21.3K 44 Sep 30, 2026: 189,877 → Oct 7, 2026: 202,194 Sep 5 Once rabies symptoms start, it's nearly 100% fatal. Here's why. 🧠 The rabies virus is neurotrophic, it's built to attack your nervous syst… 179.2K 12.5K 111 Sep 29, 2026: 172,334 → Oct 4, 2026: 179,172 Sep 28 Circumcision is one of the oldest and most common surgical procedures in the world. Here's what actually happens. 🔬 The procedure itself i… 161.5K 9,904 268 Sep 29, 2026: 109,995 → Oct 7, 2026: 161,542 Sep 16 An elite footballer's heart can pump twice as much blood as yours. Here's what years of training actually build. 🫀 It's called "athlete's… 152.5K 11.7K 61 Sep 30, 2026: 146,399 → Oct 7, 2026: 152,549 Sep 23 Before you can understand period cramps, you have to see where they come from. 🔬 The full video just dropped on YouTube. This cadaver diss… 142.1K 5,290 37 Sep 28, 2026: 129,356 → Oct 7, 2026: 142,072 Sep 18 You know creatine for your muscles. But it might do just as much for your brain. 🧠 Creatine is stored in your brain too, in neurons and as… 136.6K 11.1K 100 Sep 30, 2026: 127,246 → Oct 7, 2026: 136,615