-4 upvotes, 1 direct replies (showing 1)
View submission: ELI5:Why the heart doesn't get cramp ?
Your heart can cramp up. Think about it, what happens when you get a cramp in, say, your leg? It seizes. What's another word for seize? Arrest. What's another word for the system your heart is in? Cardiac.
Your heart can cramp. You usually die as a result.
Comment by Calomalo at 27/02/2015 at 08:14 UTC
3 upvotes, 1 direct replies
A cardiac arrest isn't a cramp. It occurs when there is a block of blood flow to a region of the heart that will result in spontaneous tissue death. The hearts' demand for energy is so great that if its supply is interrupted it just dies. Also a heart can't cramp in the way you expect. Cardiac muscle is different than skeletal muscle or smooth muscle.