Adrenal-gland medulla, lateral tegmentum, locus coeruleus, medulla oblongata, and sympathetic neurons release biogenic amines {norepinephrine}| {noradrenaline} {noradrenalin} that can inhibit or excite neuron metabolism for seconds.
biology
Norepinephrine stimulates sympathetic nervous system and increases heart activity and muscular action. It releases glucose from liver and makes glucose from glycogen. It increases heart rate and constricts most blood vessels but dilates coronary and skeletal muscle arteries. It dilates bronchi, relaxes smooth muscles, contracts sphincters, and contracts spleen.
causes
Stress, fear, and flight-or-fight response release norepinephrine.
epinephrine
Epinephrine reacts similarly.
Biological Sciences>Zoology>Organ>Endocrine Gland>Hormone>Nerve>Adrenalin
4-Zoology-Organ-Endocrine Gland-Hormone-Nerve-Adrenalin
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Date Modified: 2022.0224