Which gland releases ACTH as part of the GAS alarm stage cascade?

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Multiple Choice

Which gland releases ACTH as part of the GAS alarm stage cascade?

Explanation:
During the alarm stage of the GAS, the brain activates the hypothalamic-pituitary-adrenal (HPA) axis. The hypothalamus releases corticotropin-releasing hormone (CRH), which stimulates the anterior pituitary to secrete adrenocorticotropic hormone (ACTH). ACTH then travels to the adrenal cortex, prompting cortisol release to mobilize energy and support the stress response. The anterior pituitary is the source of ACTH in this cascade, not the hypothalamus (which releases CRH upstream), nor the adrenal cortex (which releases cortisol in response to ACTH), nor the adrenal medulla (which releases catecholamines).

During the alarm stage of the GAS, the brain activates the hypothalamic-pituitary-adrenal (HPA) axis. The hypothalamus releases corticotropin-releasing hormone (CRH), which stimulates the anterior pituitary to secrete adrenocorticotropic hormone (ACTH). ACTH then travels to the adrenal cortex, prompting cortisol release to mobilize energy and support the stress response. The anterior pituitary is the source of ACTH in this cascade, not the hypothalamus (which releases CRH upstream), nor the adrenal cortex (which releases cortisol in response to ACTH), nor the adrenal medulla (which releases catecholamines).

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