Endocrine physiology: Cortisol rises. What next?

In a normal HPA-axis feedback model, hypothalamic CRH stimulates anterior-pituitary ACTH, which stimulates adrenal-cortex cortisol. Rising glucocorticoid levels restrain upstream secretion. The prediction holds other inputs constant; circadian timing and stress also influence real physiology. This original 36-second silent lesson is not laboratory-result interpretation. Silent caption-led lesson; no narration or music. Original AI-assisted diagrams; AI source review 16 October 2026, not clinician certification. Sources: https://openstax.org/books/anatomy-and-physiology-2e/pages/17-2-hormones https://openstax.org/books/anatomy-and-physiology-2e/pages/17-4-the-thyroid-gland https://openstax.org/books/anatomy-and-physiology-2e/pages/17-6-the-adrenal-glands Create a review prompt: https://meyshan.com/app/recall?utm_source=meyshantube&utm_medium=video&utm_campaign=student_daily_202610&utm_content=d09_c Transcript: on-screen text from this silent video; no spoken narration.