axoplasm


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Related to axoplasm: axon, Axoplasmic flow

axoplasm

[′ak·sə‚plaz·əm]
(neuroscience)
The protoplasm of an axon.
References in periodicals archive ?
ii) the axoplasm in a fibre can be modelled as a fluid where a pressure wave is generated due to an electrical signal; here, for example, the actin filaments in the axoplasm may influence the opening of channels in the surrounding biomembrane but do not influence the generation of a pressure wave in the fluid [40,42,44];
The nerve terminals from nerve-muscle preparations showed changes in the distribution of subcellular organelles, axoplasm becomes more electron dense and there was pronounced mitochondrial swelling.
The virus multiplies in the muscle and connective tissue but can remain localized anywhere from days to several months; it then progresses along the axoplasm of peripheral nerves to ganglia and eventually multiplies, ultimately producing severe and fatal encephalitis.
moves down its electrochemical potential gradient from the external medium into the axoplasm.
In their experimental system Reese and colleagues squeeze the axoplasm from a squid giant axon, which is about 1,000 times wider than any axon of a vertebrate.
A nerve pulse is actually an action potential which is transmitted down the axoplasm core of a nerve fibre.
In the nerve fibers axoplasm were seen neurofilaments, mitochondria, neurotubules and few unmyelinated fibers.
Fortunately, the stellate ganglion of the squid giant fiber system, which shares many neuronal properties with mammalian systems, including a robust NF metabolism, is readily separated into giant cell bodies and pure axoplasm in quantities sufficient for diverse biochemical studies.
As with the protein measurements, axoplasm standards were run to insure that the recorded optical densities varied linearly with kinesin concentration.
Axoplasm from the squid giant axon is one of a small number of cell-free extracts within which axonal transport can be studied in vitro (1).