Security mechanisms of the nervous system
By the tissue barrier mechanisms it should be
added as a protective function of different brain membranes and nerves.
Protection neuron and the surrounding glial processes and provide the Schwann
cells, as well as the membrane of a neuron. The nervous system is protected as
an immunological barrier.
The protective role played by special regulatory
"balancing" (according to Pavlov) mechanisms aimed at prevention and
elimination of emerging changes. In pathological conditions this principle is
implemented in the activities of antisystems (GN Kryzhanovsky). The anti-activated
or formed together to form a pathological system, limiting the development of
the latter and inhibiting its activity. For example, if there is excessive pain
activated antinociceptive system regulating pain sensitivity. Activation of
antinociceptive system suppresses the occurrence of pain.
Antiepileptic system monitors the level of arousal
in different parts of the central nervous system. Electrical stimulation of the
caudal nucleus of the bridge related to antiepileptic system, suppresses the
activity of epileptic foci in the cerebral cortex.
Tonic activity of anti-system is one of
maintaining a sustainable health of mechanisms. Insufficient activity
antisystems is a condition for the development of the pathological process. For
example, the lack of antinociceptive system leads to increased pain sensitivity
and the formation of painful syndromes; antiepileptic system failure causes a
predisposition to seizures.
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