perikaryon

(redirected from perikaryal)
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perikaryon

 [per″ĭ-kar´e-on]
the cell body of a neuron; called also neurosome.

per·i·kar·y·on

, pl.

per·i·kar·y·a

(per'i-kar'ē-on, -ă),
1. The cytoplasm around the nucleus, such as that of the cell body of nerve cells.
2. The body of the odontoblast, excluding the odontoblastic process.
3. The cell body of the nerve cell, as distinguished from its axon and dendrites.
[peri- + G. karyon, kernel]

perikaryon

/peri·kary·on/ (-kar´e-on) the cell body as distinguished from the nucleus and the processes; applied particularly to neurons.

perikaryon

(pĕr′ĭ-kăr′ē-ŏn′, -ən)
n. pl. peri·karya (-kăr′ē-ə)
The cell body of a neuron, containing the nucleus and organelles.

per′i·kar′y·al (-ē-əl) adj.

perikaryon

[per′iker′ē·on]
Etymology: Gk, peri + karyon, nut
the cytoplasm of a cell body exclusive of the nucleus and any processes, specifically the cell body of a neuron. Also called cyton. perikaryontic, adj.

per·i·kar·y·on

, pl. perikarya (per'i-kar'ē-on, -ă)
1. The cytoplasm around the nucleus, such as that of the cell body of nerve cells.
2. The body of the odontoblast, excluding the dentinal fiber.
3. The cell body of the nerve cell, as distinguished from its axon and dendrites.
[peri- + G. karyon, kernel]

perikaryon

1. The PROTOPLASM surrounding the nucleus of a cell.
2. The cell body of a neuron containing the nucleus.

perikaryon

the cell body of a neuron.
References in periodicals archive ?
In fact, the perikaryal accumulations of hyperphosphorylated NF-H induced by a deregulated cdk5 in SOD mutant ALS mice alleviates the toxicity and improves the life span of the mice (Nguyen et al.
Even more striking was the fact that normal neurons surrounded by SOD1 mutant neurons developed the perikaryal filamentous deposits and degenerated, evidently "infected" by the abnormal neurons.
Deregulation of Cdk5 in a mouse model of ALS: toxicity alleviated by perikaryal neurofilament inclusions.
There are four morphological types: (1) a 3-7-[[micro]meter]long cilium with a 1-2-[[micro]meter]-long neck, an 8-11-[[micro]meter]-long tapered perikaryal region, and a long unbranched axon with a simple terminal [ILLUSTRATION FOR FIGURE 5 OMITTED]; (2) a 7-8.
Morphological types include (1) a short, 2-4-[[micro]meter]-long, perikaryal cilium with two lamellar processes [ILLUSTRATION FOR FIGURE 15 OMITTED]; (2) tiny cells with short, straight isopolar processes [ILLUSTRATION FOR FIGURE 16 OMITTED]; (3) asymmetrical cells with one short knobbed [ILLUSTRATION FOR FIGURE 17 OMITTED] or tapered [ILLUSTRATION FOR FIGURE 18 OMITTED] and one long process; (4) cells with one simple and one complexly branched process [ILLUSTRATION FOR FIGURE 19 OMITTED]; (5) cells with an elongated perikaryon that is 10-12 [[micro]meter] long and 5-7 [[micro]meter] wide with thick bifurcated processes [ILLUSTRATION FOR FIGURE 20 OMITTED].
A few multipolar ganglion cells, all tripolar, have a perikaryal cilium (not shown by SEM).
Although some damage to processes and perikaryal shape changes may have occurred in the preparations, they did not alter our ability to categorize the major cell types.