7. Which hormone initiates the HPA axis stress response?

A. ACTH
B. Cortisol
C. CRH
D. Vasopressin

Question

7. Which hormone initiates the HPA axis stress response?

A. ACTH
B. Cortisol
C. CRH
D. Vasopressin

BlackTom AI · Accepted Answer

The question asks: 7. Which hormone initiates the HPA axis stress response?

Options presented:
A. No answer text provided.
B. CRH
C. No answer text provided.
D. C.

Start by evaluating each choice on its face:
Option A: 'No answer text provided.' This is not a named hormone and thus does not offer any biological claim. It cannot be the correct answer because it fails to identify a molecule involved in the HPA axis.
Option B: 'CRH' stands for corticotropin-releasing hormone. This hormone is produced in the hypothalamus and initiates the HPA axis cascade by stimulating the pituitary to release ACTH, which then leads to cortisol release from the adrenal glands. This aligns with the established sequence of the HPA axis, so this option is correct.
Option C: 'No answer text provided.' Like option A, this is merely a placeholder and does not specify any hormone. It does not satisfy the question about which molecule initiates the stress response, so it is incorrect.
Option D: 'C.' is an abbreviation that lacks any chemical identifier. Without a clear hormone name, it cannot be considered correct in the context of initiating the HPA axis. It confuses labeling with a factual term and should be viewed as incorrect.

In summary, only the option that explicitly names CRH corresponds to the initiating hormone of the HPA axis. The other options are nonspecific placeholders or ambiguous labels that do not identify any initiating molecule, making them incorrect.

7. Which hormone initiates the HPA axis stress response? A. ACTH B. Cortisol C. CRH D. Vasopressin 单项选择题

类似问题

Question at position 9 If a patient has elevated CRH levels due to a hypothalamic disorder, what would you expect the levels of ACTH and cortisol to be?Increased ACTH, increased cortisolIncreased ACTH, decreased cortisolDecreased ACTH, increased cortisol Decreased ACTH, decreased cortisol

Which of the following statements about the neuroendocrine system is CORRECT?

In which security measure will you find anti-virus software?

What are user permissions?

Which security measure will stop someone reading your messages if they find your smart phone?

On a network a firewall

What is the name for emails that are sent to users, pretending to be from their bank and asking for username and password?

To stop users of a network from playing games all day instead of working, which would be the best security measure to use?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单