To provide a more accurate response, could you please specify which simulation you're referring to? However, in general, two key human body systems that often work together to maintain homeostasis are:
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The Endocrine System: This system uses hormones to regulate various physiological processes, including metabolism, growth, and response to stress, thereby assisting in maintaining internal balance.
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The Nervous System: This system coordinates quick responses to changes in the environment, helping to control voluntary and involuntary actions, regulate body temperature, and manage other homeostatic processes.
Together, these systems respond to changes in the internal and external environments to maintain stable conditions in the body.