transmitter substance
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Transmitter — For biologic transmitters, see transmitter substance. Commercial FM broadcasting transmitter at radio station WDET FM, Wayne State University, Detroit, USA. It broadcasts at 101.9 MHz with a radiated power of 48 kW. In electronics and… … Wikipedia
Non-noradrenergic, non-cholinergic transmitter — A non noradrenergic, non cholinergic transmitter (NANC) is a neurotransmitter of the peripheral nervous system (PNS) that is neither of the main two PNS transmitters, i.e. noradrenaline and acetylcholine. Comparison table This table compares… … Wikipedia
Dale's principle — Illustration of the major elements in chemical synaptic transmission. An electrochemical wave called an action potential travels along the axon of a neuron. When the wave reaches a synapse, it provokes release of a puff of neurotransmitter… … Wikipedia
Fiber — The parts of plants that cannot be digested, namely complex carbohydrates. Also known as bulk or roughage. Complex carbohydrates from plants are rich in starch and fiber. Examples of plants that provide complex carbohydrates (fiber) are fresh… … Medical dictionary
attention — attentional, adj. n. /euh ten sheuhn/; interj. /euh ten shun /, n. 1. the act or faculty of attending, esp. by directing the mind to an object. 2. Psychol. a. a concentration of the mind on a single object or thought, esp. one preferentially… … Universalium
neurotransmitter — /noor oh trans mit euhr, tranz , nyoor /, n. any of several chemical substances, as epinephrine or acetylcholine, that transmit nerve impulses across a synapse to a postsynaptic element, as another nerve, muscle, or gland. [1960 65; NEURO +… … Universalium
Synapse — The point of connection usually between two nerve cells. Specifically, a synapse is a specialized junction at which a nerve cell (a neuron) communicates with a target cell. The neuron releases a chemical transmitter (a neurotransmitter) that… … Medical dictionary
Rod cell — NOTOC Infobox neuron neuron name = Rod cell image neuron = Fig retine.png caption neuron = Cross section of the retina. Rods are visible at far right. location = Retina function = Low light photoreceptor neurotranmitter = Glutamate morphology =… … Wikipedia
Land pollution — is the degradation of earth s land surfaces often caused by human activities and their misuse of land resources. Haphazard disposal of urban and industrial wastes, exploitation of minerals, and improper use of soil by inadequate agricultural… … Wikipedia
calcium current — Inflow of calcium ions through specific calcium channels. Critically important in release of transmitter substance from presynaptic terminals … Dictionary of molecular biology
Dopamine — An important neurotransmitter (messenger) in the brain. Dopamine is classified as a catecholamine (a class of molecules that serve as neurotransmitters and hormones). It is a monoamine (a compound containing nitrogen formed from ammonia by… … Medical dictionary
