Question 29

Rats stop eating and may eventually starve to death when the lateral hypothalamus is damaged.

Damage to the lateral hypothalamus in rats leads to a significant decrease in their appetite, resulting in cessation of eating and potential starvation.

A) They become submissive to other rats.

This option is incorrect because damage to the lateral hypothalamus primarily affects appetite regulation rather than social behavior. While submissiveness could be influenced by other brain regions, it is not a direct consequence of lateral hypothalamus impairment.

B) They become agitated and attack other rats.

This option is also incorrect. While aggression and agitation can be associated with other neurological changes, damage to the lateral hypothalamus does not typically result in aggressive behavior; rather, it disrupts normal feeding behavior.

C) They stop eating and may eventually starve to death.

This statement is correct as damage to the lateral hypothalamus interrupts the signals that stimulate hunger, leading to a lack of food intake and the risk of starvation.

D) They will eat only foods that are sweet.

This option is incorrect since damage to the lateral hypothalamus does not result in a preference for sweet foods, but rather a general loss of appetite. The regulation of food preferences is more complex and involves other brain mechanisms.

Conclusion

The evidence clearly indicates that damage to the lateral hypothalamus directly affects feeding behavior, leading to cessation of eating and potentially starvation. All other options either misrepresent the consequences of such damage or relate to behaviors not directly tied to the lateral hypothalamus's functions.