@instituteofhumananatomy: 🫀 A heart attack doesn't just hurt — it permanently takes part of your heart with it. Here's why: when a blocked coronary artery cuts off blood supply to the heart muscle, cardiac muscle cells start to die. And unlike your skin cells or even your liver cells — which can divide and regenerate — cardiac muscle cells cannot be replaced. Ever. Instead, those dead cells get replaced with scar tissue. Non-functional scar tissue. Which means the heart's pumping capacity is permanently reduced. 😔 Your body's cells basically fall into three groups: Always dividing — skin cells, blood cells Can be forced to divide — liver and kidney cells (this is why you can donate part of a liver and it grows back) Never divide — neurons, and cardiac and skeletal muscle fibers The most specialized cells in your body are the ones you can least afford to lose. Follow for more anatomical awesomeness! #tiktoklearningcampaign #anatomy #humananatomy #heartfailure #heartattack #myocardialinfarction #hearthealth #cardiacmuscle #heart #cardiovascular #physiology #anatomyandphysiology #healthscience #medschool #premed #learnontiktok

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Tuesday 02 June 2026 15:00:00 GMT