I’m referring to the electricity that is involved with the heart beating and brain signals. How does it get into us to begin with when we are a fetus, and how does it keep being produced?
In: Biology
The First Law of Thermodynamics (Conservation) states that energy is always conserved, it cannot be created or destroyed.
So all energy in the body has come from elsewhere first.
The sun is the major source of energy in our solar system, and on Earth we receive most of it as electromagnetic radiation (visible light, UV, infrared, radiowaves and microwaves). Once it gets to earth, and reaches plants, photosynthesis is used to store the energy from light as chemical energy.
We (or our mother, if we are a feotus) then eat that food, break down the chemicals into their molecules to be useable as energy. It is within the bonds of these chemicals that the energy is stored and so when something like a donut is eaten, we break it down into glucose and other molecules etc which are more easily transported around the body via the bloodstream. At the cellular level this is then converted into ATP for short term storage or transport via a process called cellular respiration. Then finally, to release the energy it is converted to ADP and this chemical reaction is what we use to finally flex our muscles or for the heart to beat.
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