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Adrenaline (epinephrine) is secreted by the adrenal medulla and prepares the body for the "fight or flight" response.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Adrenal Gland - Cortex and Medulla
The sympathetic nervous system prepares the body for emergency responses, increasing heart rate and redirecting energy.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Peripheral and Autonomic Nervous System - Cranial and Spinal Nerves
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