Questions: The pituitary stimulates another endocrine gland to secrete its hormone. Then, this second hormone signals the pituitary to inhibit further secretion of the initial pituitary hormone. This is an example of what type of inhibition? Neutral Negative Positive

The pituitary stimulates another endocrine gland to secrete its hormone. Then, this second hormone signals the pituitary to inhibit further secretion of the initial pituitary hormone. This is an example of what type of inhibition? Neutral Negative Positive
Transcript text: The pituitary stimulates another endocrine gland to secrete its hormone. Then, this second hormone signals the pituitary to inhibit further secretion of the initial pituitary hormone. This is an example of what type of inhibition? Neutral Negative Positive
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Solution

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The answer is the second one (or B): Negative.

Explanation for each option:

  1. Neutral: This term does not apply to the described scenario. Neutral inhibition would imply no significant effect on the process, which is not the case here.

  2. Negative: This is the correct answer. Negative feedback inhibition is a regulatory mechanism in which an increase in the output of a process inhibits the process itself. In this case, the hormone from the second endocrine gland inhibits the pituitary from secreting more of the initial hormone, thus maintaining homeostasis.

  3. Positive: Positive feedback would involve a process where the output enhances or amplifies the process itself. This is not the case here, as the second hormone inhibits further secretion of the initial hormone, rather than promoting it.

Summary: The described scenario is an example of negative feedback inhibition, where the hormone from the second endocrine gland inhibits the pituitary from secreting more of the initial hormone.

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