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| nor·ep·i·neph·rine [ nàwr epə néffrin ] |
noun |
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hormone and neurotransmitter: a hormone, secreted by the adrenal gland and similar to epinephrine, that is the principal neurotransmitter of sympathetic nerve endings supplying the major organs and skin. It increases blood pressure and rate and depth of breathing, raises the level of blood sugar, and decreases the activity of the intestines.
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