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Eating Behaviour

Neural and hormonal mechanisms in eating behaviour

  • 4 things to know
  • Paper 3

Overview

The hypothalamic areas controlling hunger and satiety, the roles of ghrelin and leptin, and the limitations of the hypothalamic account.

What you need to know

Answer each one before you reveal it.

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Process

Which hypothalamic areas control hunger and fullness?

Key term

What is ghrelin and what does it do?

Key term

What is leptin and how does it affect appetite?

Evaluation

Give limitations of the hypothalamic account of eating.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Which brain region is primarily responsible for regulating eating behaviour?

    Model answer

    The hypothalamus, which contains distinct areas controlling hunger and satiety.

  2. 2

    What is the function of the lateral hypothalamus in eating behaviour?

    Model answer

    It functions as the 'hunger centre' and when stimulated it initiates feeding behaviour.

  3. 3

    What is aphagia and what causes it?

    Model answer

    Aphagia is a condition where the organism fails to eat, caused by damage or lesions to the lateral hypothalamus.

  4. 4

    What would happen if an animal's lateral hypothalamus was destroyed?

    Model answer

    The animal would develop aphagia and fail to eat.

  5. 5

    What is the function of the ventromedial hypothalamus in eating behaviour?

    Model answer

    It functions as the 'satiety centre' and when stimulated it inhibits feeding behaviour.

  6. 6

    What is hyperphagia and what causes it?

    Model answer

    Hyperphagia is a condition of overeating leading to obesity, caused by damage or lesions to the ventromedial hypothalamus.

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