One of several chemicals blurring the distinction between neurotransmitters produced by neuron cells and hormones produced by endocrine cells. The central nervous system and the endocrine system are intimately interconnected. For example, the nervous system can stimulate the adrenal glands of the endocrine system to produce the hormone adrenaline, but some nerve cells can also secrete neurohormones that act much like adrenaline. One can think of the nervous system as a rapid-acting electrical system and the endocrine system as a slower-acting chemical system, the two systems being complementary to, rather than independent of, each other. See text, Chapter 4. See also, "hormone," "melatonin," "neurotransmitter," "pineal gland" and "serotonin."
any of a group of substances produced by specialized cells (neurosecretory cells) structurally typical of the nervous (rather than of the endocrine) system, but that serve as a link between the two systems
a hormone produced by the brain.
Compound that is released at a synapse and diffuses across the synaptic cleft to act on a receptor located on the membrane of a postsynaptic cell, which may be another neurone, a muscle cell or a specialized gland cell. It is released from nerve endings by nerve impulse activity at morphologically distinguishable synaptic junctions producing suitable changes in the excitability of the postsynaptic membrane, also see Neuromodulator, Neurotransmitter
a hormone that is released by nerve impulses (e.g., norepinephrine or vasopressin)
a hormone produced by or acting on the nervous system, compared to hormones produced by the endocrine system
A chemical substance made by tissue in the body's nervous system that can change the structure or function or direct the activity of an organ or organs. Neurotransmitter: A biochemical substance that stimulates or inhibits nerve impulses in the brain that relay information about external stimuli and sensations, such as pain.
A chemical transmitter produced by nervous tissue. Uses the bloodstream or other body fluids for distribution to its target site.
A secreted substance from a neuron, perhaps from the active zone, or from a synaptic vesicle, which has a direct chemical action at a distance from the release site, further away than the closest postsynaptic processes. Such chemical action at a distance may influence other neurons, muscles, and perhaps other tissues.