Body regulation
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Body Regulation PowerPoint PPT Presentation


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Body Regulation. Homeostasis : Processes used by the body to maintain a stable and functioning environment. Your body is continuously working to maintain homeostasis. Just sitting in your chair, blood pressure, body temperature and glucose levels are being constantly regulated by your body.

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Body Regulation

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Body regulation

Body Regulation

  • Homeostasis: Processes used by the body to maintain a stable and functioning environment.

  • Your body is continuously working to maintain homeostasis. Just sitting in your chair, blood pressure, body temperature and glucose levels are being constantly regulated by your body.


Feedback mechanisms

Feedback Mechanisms

  • Negative Feedback: Any process that returns the body back to its normal state. This is the most common way to maintain homeostasis.

Body releases insulin

Blood sugar levels rise

Body stops releasing insulin

Insulin lowers blood sugar levels


Body regulation

  • Positive Feedback: One change in the body leads to another, often larger, change (domino effect). Positive feedback is rare in a healthy, normal body.

A hormone stimulates uterine contractions

Contractions increase

Pressure from the baby causes more hormone to be released

Contractions cause baby to push against the birth canal


Positive or negative feedback

Positive or Negative Feedback?

Body begins to sweat

Body temperature rises

Body stops sweating, temperature is back to normal

Sweating helps to lower body temperature

Negative, because the process returns the body temperature back to normal


Body regulation

Positive or Negative Feedback?

Lactic acid is built up in the muscles

Person exercises

Person continues exercising

Lactic acid causes muscle soreness

Positive, because the soreness will continue to increase until the person stops the exercise


Body regulation

Positive or Negative Feedback?

Body begins to shiver

Body temperature lowers

Body stops shivering, temperature is back to normal

Shivering helps to raise body temperature

Negative, because the process returns the body temperature back to normal


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