dorsal root

American  

[dawr-suhl root] / ˈdɔr səl ˌrut /

noun

plural

dorsal roots

1. Physiology. one of the two roots that come from the spinal cord and merge to form each spinal nerve; the component of a spinal nerve that transmits sensation. Compare ventral root.

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Example Sentences

These overstimulated immune cells then move toward the dorsal root ganglia -- the sensory nerve hubs that link the limbs to the spinal cord -- and release inflammatory compounds that irritate and damage nerves.

From Science Daily • Nov. 21, 2025

Using mouse antibodies that glom on to proteasomes, and other methods, the investigators found the proteasomes on the surface of neurons in the spinal cord, dorsal root ganglia, sciatic nerve and peripheral nerves innervating skin.

From Science Daily • Apr. 12, 2024

When dorsal root ganglia—clusters of neurons that innervate non‑ face areas—were examined, they showed only trace amounts of the supersensitive short form of TRPV1.

From Scientific American • Feb. 4, 2015

The muscle is quickly stretched, resulting in activation of the muscle spindle that sends a signal into the spinal cord through the dorsal root.

From Textbooks • Jun. 19, 2013

But I soon discovered that such nerve cells are found outside the grey matter all the way to the so-called spinal ganglion of the dorsal root.

From A General Introduction to Psychoanalysis by Freud, Sigmund