Where does this come from, and can I check it?

Dermatomes are skin territories mapped to the single nerve root that serves them. The figure is taken from American Association of Neurological Surgeons, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a human body fact?

Yes. It sits on the Human Body shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Each spinal nerve owns a strip of skin

Dermatomes are skin territories mapped to the single nerve root that serves them Every spinal nerve except the first cervical supplies a band of skin, and the bands form a striped pattern around the trunk and along the limbs. Clinicians use the map to trace numbness back to a specific nerve root. Shingles produces a rash that follows a single dermatome. It sits in Mondo's human body collection, one of 200 facts that each trace back to the reference below.

Where this comes from

American Association of Neurological Surgeons

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Science trivia

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Specialised thermoreceptors detect temperature changes in skinDistinct nerve endings register cold and warm thermal stimuli independently Nerve signals jump between gaps in myelinInsulation forces the impulse to leap from one node to the next in saltatory conduction The autonomic system has accelerator and brake branchesSympathetic nerves mobilise the body for action while parasympathetic nerves restore calm Nerve signals can travel up to 120 metres per secondMyelinated nerve fibres transmit electrical signals across the body in milliseconds Brain tissue itself cannot feel any painSurgeons can perform brain procedures on conscious patients without cerebral discomfort Spinal reflexes act before signals reach the conscious brainNeural pathways in the spinal cord trigger swift protective muscle reactions

Tags: skin, nerves, anatomy

Each spinal nerve owns a strip of skin: the short answers

Where does this come from, and can I check it?: Dermatomes are skin territories mapped to the single nerve root that serves them. The figure is taken from American Association of Neurological Surgeons, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?: Yes. It sits on the Human Body shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.