alleryAdrenaline (epinephrine), the fight-or-flight hormone, is produced by the:
APancreas
BAdrenal medulla
CPituitary
DPineal gland
Answer & Solution
Correct answer: B. Adrenal medulla
1. ADRENAL gland (atop each kidney) has two regions; the medulla secretes adrenaline.
2. Adrenaline INCREASES heart rate, dilates pupils, sends blood to muscles for fight or flight.
3. Adrenal cortex secretes steroid hormones (cortisol, aldosterone) — different role.
_Source: syllabus Science Ch 6 §6.2 Adrenal Gland_
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