Why the heart doesn’t get tired from being active 24/7 but other muscles do?
In: Biology
So before we start any of this, there are different types of muscles.
* Cardiac muscle – muscle in the heart, also the one we are talking about here
* Striated Muscle – Muscle in biceps, triceps, abdominal region. This is what we go to the gym to work out.
* Smooth muscle – This is your stomach, intestines, and really most internal organs.
There are more but I’m not about to pull out my freshman year bio textbook.
Striated muscles are used all day when we are awake, these have to propel the body forward and do day to day tasks, your brain has to send out electric impulses to do these things and even though you may not think about it, you move these muscles consciously.
Cardiac and Smooth muscles however work on their own, there are parts of your brain (like I believe the stem) that are devoted to **involuntary actions** such as your heart beating, digesting food, blinking, and similar things.
Now you’re probably blinking voluntarily now so sorry, but that proves that **some** involuntary actions can be done **voluntarily**. Other ones like your heart beating are done fully involuntary.
Also the Cardiac Muscles are much more important than Striated Muscles. The energy from eating goes towards keeping your heart going first as it’s a lot more vital than your biceps.
Hope it wasn’t too much :p
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