Epinephrine is a hormone and neurotransmitter. It is a catecholamine, a sympathomimetic monoamine derived from the amino acids phenylalanine and tyrosine. Basically it's the hormone that's triggered in your body for protection from anything.
Tuesday, January 27, 2009
Human Body
The human body is composed of 10 systems: The Skeletal, Digestive, Muscular, Nervous, Lympathic, Male reproductive, Female reproductive, Endocrine, Cardiovascular, and Urinary systems.
Here are some examples of these systems: 
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