Regulation of Food Intake Quiz

Which hypothalamic nucleus acts as the satiety center?

• Lateral nuclei

• Ventromedial nuclei

• Arcuate nucleus

• Paraventricular nucleus

Destruction of the lateral hypothalamic feeding center leads to:

• Hyperphagia

• Inanition (severe weight loss)

• Increased energy expenditure

• Leptin resistance

Which hormone is known as the “hunger hormone”?

• Leptin

• Insulin

• Ghrelin

• Serotonin

What is the effect of stimulating the arcuate nucleus neurons that release α-MSH?

• Increased food intake and decreased energy expenditure

• Decreased food intake and increased energy expenditure

• Increased appetite and weight gain

• No effect on appetite

Which of the following is an orexigenic (appetite-stimulating) substance?

• Leptin

• Glucagon-like peptide (GLP-1)

• Neuropeptide Y (NPY)

• Insulin

Which hormone is released from adipose tissue and regulates long-term energy balance by reducing food intake?

• Ghrelin

• Cortisol

• Leptin

• Peptide YY (PYY)

According to the glucostatic theory of hunger, what happens when blood glucose levels fall?

• Satiety center is stimulated, leading to decreased food intake

• Feeding center is stimulated, leading to increased food intake

• Leptin levels rise, causing decreased appetite

• Ghrelin secretion stops

Which gastrointestinal hormone is anorexigenic (appetite-suppressing)?

• Orexin A

• Peptide YY (PYY)

• Ghrelin

• Agouti-related peptide (AgRP)

What effect does exposure to cold temperatures have on food intake?

• Decreases food intake

• Increases food intake

• No effect on food intake

• Decreases metabolic rate

Which of the following statements about leptin resistance is TRUE?

• It is common in underweight individuals

• It leads to decreased appetite and weight loss

• It is characterized by decreased sensitivity of leptin receptors

• It results from low levels of leptin in obese individuals