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Summary

Description
English: Dermatomes of the Upper Parts of the Body

(Modified, from Fender, after Foerster) A dermatome is an area of skin supplied by the dorsal (sensory) root of a spinal nerve. The dermatomes were determined by plotting (a) the areas of vasodilation that resulted on stimulation of individual dorsal nerve roots, and (b) the areas of "remaining sensibility" after cutting three roots above and three roots below a given nerve root. The areas plotted represent the average finding for each dorsal root based on pain sensation. Areas determined for temperature sensation have similar limits, but those for touch are more extensive. Note that there is considerable overlapping of con- tiguous dermatomes; that is to say, each segmental nerve overlaps the territories of its neighbours. As a result, no anesthesia results unless two or more con- secutive dorsal roots have lost their functions. The 7th cervical dermatome (not depicted) begins lower on the upper arm than the 6th and includes most,

or all, of the hand.
Date
Source An atlas of anatomy, / by regions 1962
Author Grant, John Charles Boileau

Licensing

Public domain
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.

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Captions

Dermatomes of upper body and arms

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5 December 2013

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Date/TimeThumbnailDimensionsUserComment
current00:47, 27 May 2015Thumbnail for version as of 00:47, 27 May 20151,776 × 2,456 (778 KB)CmdrjamesonCompressed with pngout. Reduced by 12024kB (93% decrease).
14:22, 5 December 2013Thumbnail for version as of 14:22, 5 December 20131,776 × 2,456 (12.5 MB)CFCFUser created page with UploadWizard

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