What might happen to the human body if one part of the nervous system fails to carry out its function properly?

If a part of the nervous system fails to carry out its function properly, it can lead to a variety of symptoms depending on the affected area. For example, if the autonomic nervous system is disrupted, it can result in issues with heart rate, blood pressure, digestion, and body temperature regulation. If the peripheral nervous system is affected, it can lead to muscle weakness, numbness, tingling, and pain in the affected area.