perikaryon


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perikaryon

 [per″ĭ-kar´e-on]
the cell body of a neuron; called also neurosome.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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]
Farlex Partner Medical Dictionary © Farlex 2012

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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

perikaryon

1. The PROTOPLASM surrounding the nucleus of a cell.
2. The cell body of a neuron containing the nucleus.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Fibrous astrocytes were seen in the vicinity of the blood capillaries and exhibited a small cell body, large oval nucleus and a dark staining nucleolus with processes extending from the perikaryon. Protoplasmic astrocytes were characterized by their abundance of cell processes and a smaller size of the perikaryon (Fig.
Beginning on day 5, however, neuronal degeneration was seen in many areas, manifested by shrinkage of the perikaryon with intense eosinophilia of the cytoplasm, central chromatolysis, and condensation of the nucleus.
Intracellular A[Beta] immunostaining of hippocampal and cortical neurons, detected with the A[Beta]1-28 and A[Beta]40 (R163) antibodies, was present in all DS cases, including subjects as young as 1 year This immunostaining had a distinct vesicular pattern and was strongest in the perikaryon (Figure 1), but was also present in neuronal processes.
A 90-degree clockwise rotation of this confocal stack shows that the perikaryon of this neuron is closer to the surface of the foot than the immunoreactive organelles associated with the ciliary cells (Fig.
One perikaryon (pp) was positioned toward the posterior margin of the buccal mass and appeared to receive innervation from neurites that exited the pleural ganglion (Figs.
Type T photoreceptors are characterized by a flat perikaryon (Fig.
The present study focuses particularly on the ultrastructure of the flange and perikaryon regions of the pillar cells, which form the principal epithelial barrier between the hemolymph and the external medium.
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.
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.
Therefore, a greater amount of nuclear transcript provides a steady flow of GnRH mRNA to the cytoplasm, and it is generally postulated that changes in the amount of GnRH mRNA in the perikaryons are rather dependent on this mRNA turnover, both rapid accumulation and fast degradation.