https://tube.blueben.net/videos/watch/7600aba2-91a0-40f6-b8ed-d0122f8eecaa The Heartstrings Keeping You Alive Inside your heart are tiny fibrous cords called chordae tendineae — the “heartstrings” that keep your valves working. With every heartbeat, these delicate structures pull tight, holding valve leaflets closed and preventing blood from flowing backward. They endure billions of cycles throughout your lifetime. Sat, 12 Sep 2026 11:50:22 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.blueben.net https://tube.blueben.net/client/assets/images/icons/icon-96x96.png https://tube.blueben.net/videos/watch/7600aba2-91a0-40f6-b8ed-d0122f8eecaa All rights reserved, unless otherwise specified in the terms specified at https://tube.blueben.net/about and potential licenses granted by each content's rightholder.