Multiple Choice
Which of the following endocrine organs only stores hormones produced by the hypothalamus?
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43. Endocrine System
Endocrine System
Multiple Choice
How does the hypothalamus control the secretion of growth hormone (GH) from the anterior pituitary?
A
The hypothalamus sends a hormone to the target cells that makes them receptive to GH.
B
Feedback from the target cells is sent to the posterior pituitary, which signals the hypothalamus to stimulate the anterior pituitary.
C
The hypothalamus stimulates an action potential in the posterior pituitary, which then sends a releasing hormone to the anterior pituitary.
D
None of the listed responses is correct.
E
The hypothalamus produces a releasing hormone that stimulates the pituitary to secrete GH.
Verified step by step guidance1
Understand the role of the hypothalamus in the endocrine system: The hypothalamus is a crucial brain region that links the nervous system to the endocrine system via the pituitary gland.
Identify the relationship between the hypothalamus and the pituitary gland: The hypothalamus controls the pituitary gland by releasing specific hormones that either stimulate or inhibit the secretion of pituitary hormones.
Focus on growth hormone (GH) regulation: The hypothalamus produces Growth Hormone-Releasing Hormone (GHRH), which stimulates the anterior pituitary to release growth hormone (GH).
Consider the feedback mechanism: Once GH is released, it acts on target tissues, and the effects are monitored by the hypothalamus, which adjusts GHRH production accordingly.
Clarify the correct mechanism: The hypothalamus directly influences the anterior pituitary by releasing GHRH into the hypophyseal portal system, which then prompts the anterior pituitary to secrete GH.
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