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

Plate 6.100 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 6.100 Dorsal Root Ganglion: Sensory neurons

Rhesus monkey, 10% formalin, H. & E., 162 x.

Cell bodies: Unipolar and ovoid or spherical in shape. Note the variation in size and density of staining of the large "clear" cells and the more numerous, small, densely staining "obscure" cells. See also Plates 101 and 102. Each ganglion cell is surrounded by deeply stained nuclei of the capsule cells (satellite cells).

Nerve fibers: These are shown separating groups of nerve cells. They constitute central and peripheral axons of ganglion cells. Central and peripheral axons are branches of a single extension of the sensory neuron cell body (see Plates 103 and 106). The peripheral processes convey impulses from sensory receptors, and, since they conduct toward the cell body, they function like a dendrite. The central processes carry impulses to the central nervous system (spinal cord). No synapses occur in the dorsal root ganglion.

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