Answer:
Hi!
I believe the answer is <em>proteins</em>.
Explanation:
Muscles are composed of almost 80% protein. A lot of your body uses proteins actually, it's crazy!
Hope this helps!
1. P<span>arasympathetic Nervous System
2. Excretion
3. A</span><span> Preanesthetic Medication
4. I</span><span>ntravenous Injection
</span>5. Perfusion
Hope this helps xox :)
Work makes the least amount of time go by on a clock