Why does my heart pound?

What is adenosine and why does its blockage cause the heart to pound?

  • I'm doing an experiment write up about the affects of caffeine on a daphnia's heart rate. Apparently, one reason for this, is that caffeine blocks adenosine receptors on heart muscle cells, which causes the heart to pound. What exactly is adenosine and why does its blockage cause the heart to pound?? Thanks in advance.

  • Answer:

    AN ADENOSINE IS A... nucleoside composed of a molecule of adenine attached to a ribose sugar molecule, there are differnts types of adenosine such as A1, A2a, A2b, and A3. As a drug, adenosine is used to treat some types of arrhythmias (abnormal heart rhythms), such as too slow or too fast. WHY ITS BLOCKAGES CAUSES HEART TO POUND... SOZ CULDNT FIND ANY INFO 4 DIS ONE :/ COMPLICATED AND CONFUSIN STUFF! :P

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