perikaryon


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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 ?
Protoplasmic astrocytes were characterized by their abundance of cell processes and a smaller size of the perikaryon (Fig.
8 [[micro]meter] (n = 14) in width [ILLUSTRATION FOR FIGURE 2 OMITTED]; and the pillar cell flange, a fine, roughly elliptical, radial, apical expansion of the perikaryon [ILLUSTRATION FOR FIGURE 2 OMITTED], 56 [+ or -] 10 [[micro]meter] (n = 3) in diameter and 2.
The distribution and height of the microvilli are not uniform over the pillar cell surface: they are longer (Table I) and numerically more dense [ILLUSTRATION FOR FIGURE 13 OMITTED] above the perikaryon [ILLUSTRATION FOR FIGURE 4 OMITTED] than in the outer flange region [ILLUSTRATION FOR FIGURE 9 OMITTED].
The electron-dense subapical cytoplasm immediately above the perikaryon [ILLUSTRATION FOR FIGURE 4 OMITTED] contains numerous small vesicles; polyribosomes; mitochondria, frequently disposed with their long axes parallel to that of the perikaryon; cisternae of rough endoplasmic reticulum; and bundles of 23-nm diameter microtubules that insert into the base of each tuft of microvilli [ILLUSTRATION FOR FIGURE 4 OMITTED].
The apical flange region of the pillar cells becomes attenuated and thinner as the distance from the perikaryon increases, attaining only 1.
The A-segment cytoplasm is relatively devoid of organelles except for the nucleus and a thin surrounding perikaryon [ILLUSTRATION FOR FIGURE 6B,C OMITTED] that contains mitochondria, but little else.
The drawings were cut out and arranged into categories based on the number of processes arising from the perikaryon and the presence of an apical cilium.
Apical perikaryon with single slender process = unipolar neuron [ILLUSTRATION FOR FIGURE 29 OMITTED]
Cilium associated with apical perikaryon = unipolar sensory cell [ILLUSTRATION FOR FIGURES 1-4 OMITTED]
No cilium on apical perikaryon = unipolar ganglion cell [ILLUSTRATION FOR FIGURES 12-14 OMITTED]
The immunoreactivity was associated with pear-shaped cells (9 [mu]m in perikaryon length) tapering to a single axon-like process and filled with large granules, 1-2 [mu]m in diameter (Figs.