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Anatomy Atlases: Atlas of Microscopic Anatomy: Section 1 - Cells Atlas of Microscopic Anatomy: Section 6 - Nervous Tissue

Plate 6.103 Dorsal Root Ganglion: Sensory Neurons

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger, Jr., Ph.D.
Peer Review Status: Externally Peer Reviewed

Sensory neurons

Plate 6.103 Dorsal Root Ganglion: Sensory Neurons

Rhesus monkey, 10% formalin, H. & E., 612 x.


Ganglion cell body: This is ovoid or spherical. Note the variation in size and intensity of staining. The nucleus is central.

Satellite cells: Concentrically arranged around the ganglion cells.

Capillary: With enclothelial cell nucleus. Located in the connective tissue stroma between ganglion cells. Absence of blood cells from the capillary lumen is due to vascular perfusion fixation.

Axons: Processes of ganglion cells. Intricate coiling and winding denote its proximity to the cell of origin.

Nodes of Ranvier: Site of termination of myelin sheath segments.

Schwann cell nucleus: Flat to oval in shape. Close proximity to myelinated fibers. Schwann cells elaborate myelin sheaths.

T-bifurcation: Ganglion cell axon bifurcates to form peripheral and central processes; hence, dorsal root ganglion cells are termed pseudounipolar.

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