What is the primary role of Adrenaline in the human body, particularly during the 'fight or flight' response?

A To stimulate the release of insulin and lower blood glucose levels
B To increase heart rate, blood pressure, and energy supplies, preparing the body for physical activity ✓
C To regulate the balance of electrolytes and water in the body
D To suppress the immune system and reduce inflammation

Explanation

Adrenaline, also known as epinephrine, is a hormone released by the adrenal glands that plays a crucial role in the 'fight or flight' response, increasing heart rate, blood pressure, and energy supplies.

Mnemonic

Adrenaline = 'Add-Renal-Ine' → adds energy to renal functions

Source

Guyton and Hall Textbook of Medical Physiology
Hormones and Endocrine Markers Endocrinology Adrenal Glands and Hormones Easy MEDICAL Confidence: high