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Multiple Choice
Which hormone directly stimulates the adrenal cortex to release cortisol?
A
Prolactin
B
Adrenocorticotropic hormone (ACTH)
C
Thyroid-stimulating hormone (TSH)
D
Luteinizing hormone (LH)
Verified step by step guidance
1
Understand the role of the adrenal cortex: The adrenal cortex is part of the adrenal glands and is responsible for producing several hormones, including cortisol, which is crucial for stress response and metabolism regulation.
Identify the hormone responsible for stimulating the adrenal cortex: The pituitary gland releases specific hormones that target different glands in the body. The hormone that stimulates the adrenal cortex is known as Adrenocorticotropic hormone (ACTH).
Learn about ACTH: ACTH is produced by the anterior pituitary gland and plays a key role in the hypothalamic-pituitary-adrenal axis. It specifically targets the adrenal cortex to promote the synthesis and release of cortisol.
Differentiate ACTH from other pituitary hormones: Other hormones produced by the pituitary gland include Prolactin, Thyroid-stimulating hormone (TSH), and Luteinizing hormone (LH). Each of these hormones has distinct target organs and functions, but only ACTH directly stimulates the adrenal cortex.
Review the feedback mechanism: The release of ACTH is regulated by the hypothalamus through corticotropin-releasing hormone (CRH). When cortisol levels are sufficient, a negative feedback loop reduces the secretion of CRH and ACTH, maintaining hormonal balance.