perikaryon

[per-i-kar-ee-on, -uhn]

noun

Biology.

plural

perikarya 

1. cell body.

Word History and Origins

Origin of perikaryon¹

1895–1900; peri- + Greek káryon nut, kernel

Example Sentences

From the base often near its middle arises one large fibre—the axone fibre, which conducts impulses away from the perikaryon.

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In some few cells the axone breaks up into branches in the immediate neighbourhood of its own perikaryon in the cortex.

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The figure as interpreted in terms of functional conduction means that the cortex is beset with conductors, each of which collects nerve-impulses, from a minute but relatively wide field by its branched dendrites, and that these nerve-impulses converge through its perikaryon, issue by its axone, and are carried whithersoever the axone runs.

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The cortical neurone therefore collects impulses in the region of cortex just about its perikaryon and discharges them to other regions, some not cortical or even cerebral, but spinal, &c.

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It is noteworthy that the dendrite fibres of these cortical neurones do not transgress the limits of the grey cortex and the immediate neighbourhood of the perikaryon to which they belong; whereas the discharging or axone fibre does in the vast majority of cases transgress the limits of the grey matter wherein its perikaryon lies.

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