Why is epinephrine considered a hormone and a neurotransmitter

Explanation:

Epinephrine also called adrenaline is more of a hormone than a neurotransmitter. Hormones are used for signaling by being released into the blood stream. Adrenaline or epinephrine produced by adrenal gland, acts as a hormone. Adrenaline or epinephrine does not have its own receptor, since its chemical composition is quite similar to noradrenaline or norepinephrine, epinephrine stimulates norepinephrine receptors and acts as neurotransmitter. While norepinephrine is primarily a neurotransmitter. A neurotransmitter is used for direct signaling between the neurons generally by physical contact at synapse.

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the maintenance of fluid balance during exercise. author information: fluid supplementation is necessary for exercise in which fluid losses must be offset by intake to avoid the negative effects of hypohydration on health and performance.