How does adrenaline work?

Fight or flight. When adrenaline is released by adrenal medulla , you may have the following symptoms: sweating, palpitations, dilated pupils, dry mouth, constipation, lack of appetite, high blood pressure, anxiety, cold extremities, decreased urine flow, insomnia, dry nose. Excessive adrenaline can be harmful over time. Adrenaline is part of your autonomic nervous system called the sympathetic nervous system.

Related Questions

How does adrenaline work to treat anaphylaxis?

Multiple effects. Adrenaline (epinephrine) improves heart functioning increasing blood flow, opens narrowed breathing passages in the windpipe and lungs, and reduces leakage of small blood vessels in the skin and gut maintaining blood pressure. Epinephrine is the only medication we have that slows the mast cell release of the biochemicals causing anaphylaxis. All other drugs block their effects. Read more...
Epinephrine.... Will 1)constrict blood vessels, which raises blood pressure, 2) increase the heart rate, which raises cardiac output, 3) slows vascular leakage associated with anaphylaxis. Read more...