13.3 Biological Explanations for Anorexia Nervosa

    Cards (27)

    • Anorexia Nervosa is characterized by an abnormally low body weight
    • What is the distorted perception of body size in Anorexia Nervosa called?
      Body image distortion
    • Match the neurotransmitter or hormone with its role in Anorexia Nervosa:
      Serotonin ↔️ Obsessive behavior and anxiety
      Dopamine ↔️ Reward perception and eating habits
      Ghrelin ↔️ Reduced sensitivity to hunger
      Leptin ↔️ Disrupted satiety signals
    • Twin studies show that identical twins have higher concordance rates than fraternal twins.
    • Who conducted a twin study in 2000 that highlighted the genetic influence on anorexia nervosa?
      Strober et al.
    • Neurochemical influences in anorexia nervosa affect appetite regulation, reward perception, and emotional state.
    • Arrange the following neurochemicals or hormones based on their role in anorexia nervosa, starting with those affecting anxiety and obsessive behavior:
      1️⃣ Serotonin
      2️⃣ Dopamine
      3️⃣ Ghrelin
      4️⃣ Leptin
    • Which neurochemical is associated with anxiety and obsessive behaviors in anorexia nervosa?
      Serotonin
    • Lower levels of leptin in anorexic individuals disrupt satiety signals.
    • Genetic factors contribute 50-80% to the risk of anorexia nervosa.
    • Which type of twin studies show higher concordance rates for anorexia nervosa?
      Identical
    • Environmental factors can completely negate the genetic contribution to anorexia nervosa.
      False
    • What are the key neurochemicals involved in Anorexia Nervosa?
      Serotonin, Dopamine, Ghrelin, Leptin
    • Serotonin regulates anxiety and obsessive behaviors
    • Which neurochemical influences reward perception in Anorexia Nervosa?
      Dopamine
    • Ghrelin is responsible for signaling satiety in the body.
      False
    • Leptin signals satiety
    • Match the neurochemical with its role in Anorexia Nervosa:
      Serotonin ↔️ Regulates anxiety
      Dopamine ↔️ Influences reward
      Ghrelin ↔️ Regulates appetite
      Leptin ↔️ Signals satiety
    • Neurochemicals contribute to Anorexia Nervosa by affecting physiological and psychological processes.
    • What are the key brain regions affected in Anorexia Nervosa?
      Hypothalamus, amygdala, prefrontal cortex
    • The hypothalamus plays a critical role in appetite control
    • Which brain region is associated with emotional processing and anxiety in Anorexia Nervosa?
      Amygdala
    • Decreased prefrontal cortex activity may impair decision-making and self-control in Anorexia Nervosa.
    • Arrange the following brain regions based on their altered activity in Anorexia Nervosa:
      1️⃣ Hypothalamus (Reduced activity)
      2️⃣ Amygdala (Increased activity)
      3️⃣ Prefrontal Cortex (Decreased activity)
    • What is the estimated heritability of Anorexia Nervosa?
      50-80%
    • Brain structure changes in Anorexia Nervosa could be secondary to malnutrition
    • Environmental factors, such as cultural beauty standards, are not addressed by biological explanations of Anorexia Nervosa.
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