Homeowner SectionContractor SectionBuilder SectionArchitect Section Find a Contractor
Zip Code:

News & Information

Elk Prestique® Grandé™ Substances that affect the central nervous system

This group of drugs are substances that alter the functions of the central nervous system, exerting a direct impact on its various divisions - head, oblong or spinal cord. For CNS morphological structure can be regarded as a collection of individual sets of neurons (neuron - nerve cell with its spikes), of which a person reaches 14 billion neurons of the connection between them is ensured by the contact with each other processes or nerve cell bodies.. Such interneuron contacts called synapses (sinapsis - link connection). transmission of nerve impulses in the synapses of the central nervous system, as in the synapses of the peripheral nervous system, by means of chemical transmitters excitation - mediators. The role of neurotransmitters in the synapses of the CNS operate acetylcholine, norepinephrine, dopamine, and other substances. The drugs affecting the central nervous system, modify (stimulate or inhibit) the transmission of nerve impulses in the synapses. Mechanisms of action of the substances on the central nervous system synapses different. For example, some substances can stimulate or block the receptors at synapses, which interact with certain neurotransmitters.

Research Chemicals affecting the CNS are typically classified according to their primary effects. For example, substances that cause anesthesia, combined in a group of narcosis, causing sleep - in a hypnotic group and so on.. Drugs affecting the CNS Means for anesthesia; Ethanol; Hypnotics; Antiepileptic agents; Antiparkinsonian; Analgesics; Analeptics; Psychotropic drugs.

Among these substances are drugs that have a depressant effect on the central nervous system, most functions. These substances include means for anesthesia, ethyl alcohol, hypnotics. Along with this, many substances (antiepileptics, antipsychotics, tranquilizers, sedatives) have more selective inhibitory effect on the central nervous system.

In contrast to those substances, some drugs acting on the central nervous system stimulating means (for example, analeptics, psychostimulants). There are also substances that can have a depressing effect on some nerve centers and stimulating effect - on the other. For example, narcotic analgesics inhibit the perception of pain, respiratory center, the cough center, but stimulate the vagus centers and oculomotor centers.


Elk Corp Stock Quote
Date: 1/5/2006
The Weather Channel Check the Weather
Symbol: ELK 35.30 Last Updated: 4:02pm EST
Zip Code:

Other ElkCorp Companies      |      Investor Relations      |      Employment      |      Terms of Use      |      Privacy Policy      |      Web Linking Agreement
©2005 Elk Premium Building Products, Inc. All rights reserved. All trademarks, ®, are registered trademarks, and trademarks, ™ and service marksSM, are trademarks pending registration of Elk Premium Building Products, Inc., an ElkCorp company, except that UL® is a registered trademark of Underwriters Laboratories, Inc. and HighPoint is a trademark claimed by Danse Corp.
railing, roofing shingles, composite decking, roofing shingles, composite decking, railing