Medulla oblongata, solitary tract nucleus, and adrenal-gland medulla release biogenic amines {adrenaline} {adrenalin} {epinephrine}| that can inhibit or excite neuron metabolism for seconds.
biology
Epinephrine 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 muscle, contracts sphincters, and contracts spleen.
causes
Stress, fear, and flight-or-fight response release epinephrine.
norepinephrine
Norepinephrine 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