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  2. Dorsal root ganglion - Wikipedia

    en.wikipedia.org/wiki/Dorsal_root_ganglion

    A dorsal root ganglion (or spinal ganglion; also known as a posterior root ganglion [1]) is a cluster of neurons (a ganglion) in a dorsal root of a spinal nerve. The cell bodies of sensory neurons known as first-order neurons are located in the dorsal root ganglia. [2] The axons of dorsal root ganglion neurons are known as afferents.

  3. Dorsal root of spinal nerve - Wikipedia

    en.wikipedia.org/wiki/Dorsal_root_of_spinal_nerve

    The root emerges from the posterior part of the spinal cord and travels to the dorsal root ganglion. The dorsal root ganglia contain the pseudo-unipolar cell bodies of the nerve fibres which travel from the ganglia through the root into the spinal cord. The lateral division of the dorsal root contains lightly myelinated and unmyelinated fibres ...

  4. Sensory neuronopathy - Wikipedia

    en.wikipedia.org/wiki/Sensory_neuronopathy

    The dorsal root ganglion contains cell bodies for sensory nerves including large, myelinated Aβ fibers which carry proprioception and tactile touch sensation to the brain via the dorsal column–medial lemniscus pathway and small, unmyelinated C fibers which carry thermal and pain sensation to the brain via the spinothalamic tract. [2]

  5. Segmentation in the human nervous system - Wikipedia

    en.wikipedia.org/wiki/Segmentation_in_the_human...

    The paraxial mesoderm is arranged along the sides of the notochord and neural tube as repetitive structures called somites. In fact, somites are one of the first embryonic structures to display segmentation. Structures associated with the peripheral nervous system (PNS) such as dorsal root ganglia (DRG) develop a segmental alignment with the ...

  6. Dorsal column–medial lemniscus pathway - Wikipedia

    en.wikipedia.org/wiki/Dorsal_column–medial...

    The first-order neurons are sensory neurons located in the dorsal root ganglia, that send their afferent fibers through the two dorsal columns. [3] The first-order axons make contact with second-order neurons of the dorsal column nuclei (the gracile nucleus and the cuneate nucleus) in the lower medulla.

  7. Ganglion - Wikipedia

    en.wikipedia.org/wiki/Ganglion

    A dorsal root ganglion (DRG) from a chicken embryo (around stage of day 7) after incubation overnight in NGF growth medium stained with anti-neurofilament antibody. Note the axons growing out of the ganglion. A ganglion (pl.: ganglia) is a group of neuron cell bodies in the peripheral nervous system.

  8. Sodium voltage-gated channel alpha subunit 9 - Wikipedia

    en.wikipedia.org/wiki/Sodium_voltage-gated...

    Sodium voltage-gated channel alpha subunit 9 (also Na v 1.7) is a sodium ion channel that, in humans, is encoded by the SCN9A gene. [5] [6] [7] It is usually expressed at high levels in two types of neurons: the nociceptive (pain) neurons at the dorsal root ganglion (DRG) and trigeminal ganglion; and sympathetic ganglion neurons, which are part of the autonomic (involuntary) nervous system.

  9. Neurite - Wikipedia

    en.wikipedia.org/wiki/Neurite

    Dorsal root ganglion neurons (left) extend neurites in a microfluidic device (time lapse over 48 hours). [13] An undifferentiated mammalian neuron placed in culture will retract any neurites that it has already grown. [14] 0.5 to 1.5 days after being plated in culture, several minor neurites will begin to protrude out from the cell body. [14]