The notion that normal food intake is controlled by NPY is supported by the observation that
A) NPY strongly inhibits drinking.
B) NPY antagonists block the capacity of lithium chloride to induce taste aversion.
C) NPY levels are constant across the day-night cycle.
D) intra-hypothalamic injection of an NPY antagonist blocks the capacity of food deprivation to induce eating.
E) food deprivation does not alter the levels of NPY in the brain.

Question

Quizplus · Accepted Answer

This statement directly supports the notion that NPY controls normal food intake, as an NPY antagonist (which blocks NPY activity) prevents food deprivation from inducing eating. This suggests that NPY plays a role in regulating food intake, particularly in response to hunger. The other answer choices do not provide clear support for the role of NPY in normal food intake regulation.

The Notion That Normal Food Intake Is Controlled by NPY