Positive Negative Feedback Mechanisms

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.

• Positive Feedback Response

• Negative Feedback Loop 

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After completing the lesson, write a your own definition of negative and positive feedback loops. Give an example of each type of feedback.

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A feedback loop best fits which characteristic of life?

• Cells

• Organization

• Homeostasis

• Adaptation

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The process of childbirth is an example of:

• negative feedback loop

• positive feedback loop

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Severe blood loss causing an ever-decreasing blood pressure

• positive-feedback mechanism

• negative-feedback mechanism

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The pancreas detects the amount of glucose in the blood. What does the pancreas release if blood sugar is too LOW?

• The pancreas releases glucagon if blood sugar is too low

• The pancreas releases insulin if blood sugar is too low

• The pancreas releases glucose if blood sugar is too low

• The pancreas releases beta cells if blood sugar is too low

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Maintaining body temperature is an example of a:

• negative feedback loop

• positive feedback loop

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Which of the following is an example of a positive feedback mechanism in the human body?

• Blood clotting process

• Regulation of blood sugar levels

• Thermoregulation

• Regulation of blood pressure

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What is the primary purpose of a negative feedback mechanism in biological systems?

• To amplify changes

• To maintain stability

• To initiate new processes

• To disrupt homeostasis

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During childbirth, the release of oxytocin to intensify contractions is an example of which type of feedback?

• Negative feedback

• Positive feedback

• Neutral feedback

• No feedback

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