Neural Mechanisms of Controlling Eating behaviour

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1. 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.
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2. What did Lutter et al. find?

  • When the LH was damaged it caused rats to stop eating but when it was stimulated it caused rats to overeat
  • The hormone gherlin produced in response to stress also increases appetite
  • 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

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

  • 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
  • It stimulates the hypothalamus decreasing appetite
  • It stimulates the hypothalamus increasing 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

4. What did Yang et al. find?

  • When Neuropeptide Y is injected into the hypothalmus of rats it causes overeating
  • when rats were injected with leptin they lost weight
  • 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 additional neuropeptide Y was injected into rat's hypothalamus it led to obesity

5. What is Leptin's role in controlling eating behaviour?

  • 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
  • It stimulates the hypothalamus decreasing appetite
  • It stimulates the hypothalamus increasing appetite

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