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4.8: Practice Test- Homeostasis

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    34401
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    1. After you eat lunch, nerve cells in your stomach respond to the distension (the stimulus) resulting from the food. They relay this information to ________.
    1. a control center
    2. a set point
    3. effectors
    4. sensors

     
     
    2. Stimulation of the heat-loss center causes ________.
    1. blood vessels in the skin to constrict
    2. breathing to become slow and shallow
    3. sweat glands to increase their output
    4. All of the above

     
     
    3. Which of the following is an example of a normal physiologic process that uses a positive feedback loop?
    1. blood pressure regulation
    2. childbirth
    3. regulation of fluid balance
    4. temperature regulation

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