NURSING EXAM QUESTIONS
HUMAN ANATOMY PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Childbirth (oxytocin speeding up contractions), blood clotting are examples of:
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Positive feedback mechanisms
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Negative feedback mechanisms
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -3 – Positive Feedback Loop: Normal childbirth is driven by a positive feedback loop. A positive feedback loop results in a change in the body’s status, rather than a return to homeostasis. The first contractions of labor (the stimulus) push the baby toward the cervix (the lowest part of the uterus).
Detailed explanation-2: -One example of biological positive feedback is at the onset of contractions in childbirth. When contraction occurs, oxytocin is released into the body stimulating more contractions. Thus, the result is an increased amplitude and frequency of contractions. Another example is during the process of blood clotting.
There is 1 question to complete.