Neural Mechanisms of Controlling Eating behaviour

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1. Which does neuropeptide Y do in terms of controlling eating behaviour?

  • It stimulates the hypothalamus increasing appetite
  • It stimulates the hypothalamus decreasing appetite
  • It's produced by fat cells and impulses are sent to the brain about the amount of fat cells present, obese rats have a high levels of leptin
  • It's produced by fat cells and impulses are sent to the brain about the amount of fat cells present, obese rats have a deficiency in leptin
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2. Issue with non-human research research being generalised to human research?

  • It's too simplistic
  • Obese women had normal levels or high levels of leptin suggesting leptin has different roles in different animals' bodies
  • It's too expensive

3. What did Wickens find?

  • Neuropeptide Y is produced by the hypothalamus leading to overeating then when abdominal fat is gained, the fat produces neuropeptide Y leading to more overeating
  • When Neuropeptide Y is injected into the hypothalmus of rats it causes overeating
  • When additional neuropeptide Y was injected into rat's hypothalamus it led to obesity

4. Which study found that when additional neuropeptide Y was injected into rat's hypothalamus it led to obesity?

  • Stanley et al.
  • Wickens
  • Heatherington and Ranson
  • Lutter et al.

5. What did Yang et al. find?

  • Neuropeptide Y is produced by the hypothalamus leading to overeating then when abdominal fat is gained, the fat produces neuropeptide Y leading to more overeating
  • when rats were injected with leptin they lost weight
  • When additional neuropeptide Y was injected into rat's hypothalamus it led to obesity
  • When Neuropeptide Y is injected into the hypothalmus of rats it causes overeating

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