neuroplasmn.
/ˌnjʊərə(ʊ)ˈplaz(ə)m/, U.S. /ˈn(j)ʊroʊˌplæz(ə)m/ Cell Biology.† 1. A substance believed to constitute nerves or nerve tissue. Obsolete.
ΚΠ
1879 Mind 4 571 Vibrations of neuroplasm (nervous tremors).
1884 J. L. W. Thudichum Treat. Chem. Constitution of Brain i. 1 This apparently so simple nerve-marrow, or neuroplasm, is a compound and mixture of a large number of heterogeneous principles arranged in such a manner as to vanish completely from appearance as chemical individuals.
1890 Science 17 Jan. 44/1 Even before this period the dread of the serpent may have been implanted in our human neuroplasm.
2. The cytoplasm of a neuron, originally spec. that of its axon (= axoplasm n.).Later occasionally used spec. for the cytoplasm of the cell body of a neuron.
ΘΚΠ
the world > life > the body > nervous system > substance of nervous system > [noun] > nerve cell > parts of
axon1842
cell body1851
neuron1893
neurite1894
neuroplasm1894
perikaryon1897
neurofibril1898
axon hillock1899
telodendrion1899
axoplasm1900
neurofibrilla1902
cyton1910
soma1947
neurotubule1948
neurofilament1955
neurode1987
1894 G. M. Gould Student's Med. Dict. (ed. 8) 869/1 Neuroplasm.
1896 E. L. Billstein tr. P. Stöhr Text-bk. Histol. ii. i. 81 Each fibrilla [of the axon] represents a special conducting path and is cemented to neighboring fibrillae by a small amount of finely-granular interstitial substance—neuroplasm.
1929 Q. Rev. Biol. 4 167/2 The neuroplasm of nerve cells and of nerve fibers is a fluid in which relatively firm neurofibrils are suspended.
1960 L. Picken Organization of Cells vii. 291 In the light of electron microscope studies..it is likely that the axoplasm differs from the neuroplasm rather in the relative abundance and orientation of the various components..than in absolute composition.
1970 Nature 5 Sept. 1006/2 It is generally believed that neuroplasm is constantly synthesized in the cell body and moves as a gel down the axon (and probably also along the dendrites).
1979 Malacologia 18 477 A large amount of smooth surfaced endoplasmic reticulum, microtubes and ribosomes were present in the neuroplasm of the sensory dendrites.
1992 Neurochem. Internat. 20 323 A controlled exchange of calcium between the extracellular space (mM Ca2+) and the neuroplasm (μM Ca2+) is considered to be an essential prerequisite for almost every stage of neuronal activity.
Derivatives
neuroˈplasmic adj. of or relating to neuroplasm.
ΘΚΠ
the world > life > the body > nervous system > substance of nervous system > [adjective] > nerve cell > parts of
neurofibrillar1902
neurofibrillary1902
neuroplasmic1909
axonic1939
neuritic1967
somal1967
1909 Cent. Dict. Suppl. Neuro-plasmic.
1965 Acta Neuropathol. 4 33 Neuroplasmic swellings were found within dendrites.
1970 P. A. Weiss in F. O. Schmitt Neurosciences: 2nd Study Program lxxiii. 840 (title) Neuronal dynamics and neuroplasmic flow.
1995 Jrnl. Neurochem. 64 833 There was no evidence suggesting feedback inhibition of synthesis by neuroplasmic norepinephrine.
This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).
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