The dual-center hypothesis involves which two parts of the hypothalamus in regulating hunger?
A. Lateral hypothalamus

B. Ventromedial hypothalamus

C. Arcuate nucleus

D. Anterior hypothalamus

E. Posterior hypothalamus

Choose the correct answer from the options given below:

The correct answer is 'A and B Only.

Key Points

• Dual-center hypothesis:
  • This hypothesis suggests that the regulation of hunger is managed by two distinct areas within the hypothalamus.
  • The lateral hypothalamus (LH) is often referred to as the "hunger center" because its activation leads to increased food intake.
  • The ventromedial hypothalamus (VMH), on the other hand, is known as the "satiety center" because its activation leads to decreased food intake and signals the sensation of fullness.
  • These two centers work in tandem to maintain energy balance within the body.

Additional Information

• Arcuate nucleus:
  • The arcuate nucleus is involved in regulating both appetite and energy expenditure through its interactions with various signaling pathways, but it is not part of the dual-center hypothesis.
• Anterior hypothalamus:
  • This region is more involved in regulating body temperature and other autonomic functions rather than hunger.
• Posterior hypothalamus:
  • The posterior hypothalamus is primarily involved in regulating wakefulness and sympathetic nervous system activity, not hunger regulation.