The body organs are integrated to produce organ systems. Unlike most building systems, body systems are highly organized. To maintain this order, energy must be fed into the system. All living cells depend on the release and use of energy for the maintenance and operation of the living state, just like building systems. However, no building machine or body system can produce energy out of nothing; it can only change energy from one form to another.
KeywordsSpinal Cord Building System Comfort Zone Building Control Anticipatory Control
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