Q:

The hypothalamus and core thermoreceptors notice if body temp too low. The hypothalamus signals smooth muscle in blood vessels to vasoconstrict and skeletal muscle to shiver

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The hypothalamus and core thermoreceptors notice if body temp too low. The hypothalamus signals smooth muscle in blood vessels to vasoconstrict and skeletal muscle to shiver. This activity causes body temp to rise, which is again noticed by hypothalamus & core thermoreceptors, so the hypothalamus turns off these heat gain mechanisms. In this scenario, which of the following statements is correct?


  1. The scenario describes positive feedback in action.
  2. The core thermoreceptors are the effector organs
  3. The hypothalamus is the control centre.
  4. Skeletal muscle is the efferent pathway to the effector organ.

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