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A member asked:
What exactly is a hormone?
A doctor has provided 1 answer
BIG question!: Hi. In general terms, a hormone is a substance made in one place in the body and active at other places (the target tissues). Hormones bind specific receptors in target tissues and modify cell/tissue function. Hormones come in 4 broad categories: peptides/proteins, steroids, biogenic amines, and fatty acid metabolites. I've got monster textbooks that try to answer that question! :-)
Answered 2/2/2015
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