Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question
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Question

Consider the following hormones: 1. Thyrotrophin-releasing hormone (TRH) 2. Thyroid stimulating hormone (TSH) 3. Thyroxine (T4) What is the correct sequence of the release of these hormones?
Options
A 1-2-3
Correct Answer
B 2-1-3
C 2-3-1
D 1-3-2
Correct Answer

Option A is the correct answer.

Detailed Explanation

The correct sequence in the hypothalamic-pituitary-thyroid axis is: TRH from the hypothalamus (1) stimulates the anterior pituitary to release TSH (2), which in turn stimulates the thyroid gland to release thyroxine (T4) (3). This is a classic neuroendocrine feedback loop.

Hint

Follow the hierarchical control from the hypothalamus to the pituitary to the target gland.

Question Info

Course: ZOO 101
Topic: ZOO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 857 of 2214
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