What response is adrenaline responsible for?

The fight-or-flight response.

Adrenaline, also called epinephrine, is a hormone that triggers the body's so called fight-or-flight response. It is produced when a situation requires immediate action.

Adrenaline is produced in stressful situations by the adrenal glands. The hormone prepares your body for immediate action by:

• increasing blood pressure
• expanding airways
• directing blood towards heart and lungs
• reducing pain sensibility
• dilation of the pupil
• altering metabolism to release sufficient amount of glucose as a source of energy