Assertion : Adrenaline is called an emergency hormone. Reason : It acts on the cells of skeletal, cardiac, smooth muscles, blood vessels and fat cells.

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Adrenaline (epinephrine) is a hormone produced by the medulla of the adrenal glands, that increases heart activity, improves the power and prolongs the action of muscles, and increases the rate and depth of breathing to prepare the body for 'fright, fight, or flight.It is secreted at the time of emergency. Hence it is also called emergency hormone.

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