What two hormones are the backbone to stress response?

             Cortisol and Norepinephrin are two major hormones released by body when experience stress. 

Explanation:
                    Cortisol hormones are released by adrenal cortex portion of the adrenal gland. they have a key role in regulating metabolism like level of glucose level in the blood and also have effect on immune system. If this hormone is released in excess amount it will lead to high blood pressure, a flush and round face, osteoporosis, mood swing etc. If this hormones is released in little quantity it lead to Addison's disease. Symptoms include weight loss, muscle weakness, mood changes and the darkening of regions of the skin etc.
                              Norepinephrin is also known as noradrenalin. It is secreted by adrenal medulla of adrenal gland. It acts as a neurotransmitter and also as hormone. It  causes the heart rate to increase, stored glucose(simple sugar) to be released, and increased blood flow to the muscles.

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