@instituteofhumananatomy: 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 uterus contracts to shed its lining, driven by compounds called prostaglandins. More prostaglandins mean stronger contractions and worse cramps. And when the uterine muscle squeezes hard, it can briefly compress its own blood vessels, cutting oxygen to the tissue, and less oxygen means more pain. Not random. A real muscular, chemical, and vascular event. 👉 Tap the link in our bio to watch the full breakdown on YouTube. #LearnOnTikTok #TikTokLearningCampaign #LearnBiologyOnTikTok #periodcramps #reproductiveanatomy #anatomy #humanbody #cadaverlab #anatomyandphysiology #medstudent #womenshealth #iohaanatomy