Question:
Adrenaline hormone is released from
Adrenaline hormone is released from
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Adrenaline comes from the medulla of a gland and also from sympathetic nerve endings.
Updated On: Nov 12, 2026
- adrenal medulla and sympathetic nerve fibres.
- adrenal cortex and para sympathetic nerve fibres.
- thyroid gland and hypothalamus.
- thymus gland and pineal gland.
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Adrenaline (epinephrine) is a catecholamine involved in the fight-or-flight response.
Step 2: Find the sources
It is secreted mainly by the chromaffin cells of the adrenal medulla. It is also released as a transmitter by sympathetic nerve fibres.
Step 3: Why the other options fail
The adrenal cortex makes steroid hormones, and parasympathetic fibres release acetylcholine.
Final Answer:
Adrenaline is released from the adrenal medulla and sympathetic nerve fibres. \[ \boxed{\text{(A) }\text{adrenal medulla and sympathetic nerve fibres.}} \]
Adrenaline (epinephrine) is a catecholamine involved in the fight-or-flight response.
Step 2: Find the sources
It is secreted mainly by the chromaffin cells of the adrenal medulla. It is also released as a transmitter by sympathetic nerve fibres.
Step 3: Why the other options fail
The adrenal cortex makes steroid hormones, and parasympathetic fibres release acetylcholine.
Final Answer:
Adrenaline is released from the adrenal medulla and sympathetic nerve fibres. \[ \boxed{\text{(A) }\text{adrenal medulla and sympathetic nerve fibres.}} \]
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