{"id":782,"date":"2025-06-30T16:48:01","date_gmt":"2025-06-30T16:48:01","guid":{"rendered":"https:\/\/studenthub.elsevier.com\/en\/?p=782"},"modified":"2025-07-25T14:28:56","modified_gmt":"2025-07-25T14:28:56","slug":"dermatomes-and-myotomes","status":"publish","type":"post","link":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/","title":{"rendered":"Dermatomes and Myotomes"},"content":{"rendered":"\n<p>A knowledge of dermatomes and myotomes is absolutely fundamental to carrying out a neurological examination. A typical dermatome map is shown in Fig. 1.40.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"987\" src=\"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/f01-40AB-9780323934237.jpg\" alt=\"\" class=\"wp-image-784\" srcset=\"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/f01-40AB-9780323934237.jpg 960w, https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/f01-40AB-9780323934237.jpg?resize=292,300 292w, https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/f01-40AB-9780323934237.jpg?resize=768,790 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/figure>\n\n\n\n<p><em>Fig. 1.40: Dermatomes. (A) Anterior view. (B) Posterior view. <em>Adapted from Drake, Mitchell &amp; Vogl. Gray\u2019s Anatomy for Students<\/em>, 5th Ed. 2024. \u00a9 Elsevier.<\/em><\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Clinically, a dermatome is that area of skin supplied by a single spinal nerve or spinal cord level. A myotome is that region of skeletal muscle innervated by a single spinal nerve or spinal cord level. Most individual muscles of the body are innervated by more than one spinal cord level, so the evaluation of myotomes is usually accomplished by testing movements of joints or muscle groups.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A knowledge of dermatomes and myotomes is absolutely fundamental to carrying out a neurological examination. A typical dermatome map is shown in Fig. 1.40. Fig. 1.40: Dermatomes. (A) Anterior view. (B) Posterior view. Adapted from Drake, Mitchell &amp; Vogl. Gray\u2019s Anatomy for Students, 5th Ed. 2024. \u00a9 Elsevier. Clinically, a dermatome is that area of [&hellip;]<\/p>\n","protected":false},"author":170,"featured_media":783,"comment_status":"open","ping_status":"open","sticky":false,"template":"wp-custom-template-template-anatomy-basics","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-782","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-anatomy-basics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dermatomes and Myotomes - Student Hub EN<\/title>\n<meta name=\"description\" content=\"Learn the importance of dermatomes and myotomes for neuro exams. Master this key anatomy concept for success in your healthcare studies.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dermatomes and Myotomes - Student Hub EN\" \/>\n<meta property=\"og:description\" content=\"Learn the importance of dermatomes and myotomes for neuro exams. Master this key anatomy concept for success in your healthcare studies.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/\" \/>\n<meta property=\"og:site_name\" content=\"Student Hub EN\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-30T16:48:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-25T14:28:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"690\" \/>\n\t<meta property=\"og:image:height\" content=\"360\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"cpratts\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"cpratts\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/\",\"url\":\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/\",\"name\":\"Dermatomes and Myotomes - Student Hub EN\",\"isPartOf\":{\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp\",\"datePublished\":\"2025-06-30T16:48:01+00:00\",\"dateModified\":\"2025-07-25T14:28:56+00:00\",\"author\":{\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/#\/schema\/person\/52718ee2f196a12d48b0541dca858b62\"},\"description\":\"Learn the importance of dermatomes and myotomes for neuro exams. Master this key anatomy concept for success in your healthcare studies.\",\"breadcrumb\":{\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#primaryimage\",\"url\":\"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp\",\"contentUrl\":\"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp\",\"width\":690,\"height\":360},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/studenthub.elsevier.com\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Dermatomes and Myotomes\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/#website\",\"url\":\"https:\/\/studenthub.elsevier.com\/en\/\",\"name\":\"Student Hub EN\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/studenthub.elsevier.com\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/#\/schema\/person\/52718ee2f196a12d48b0541dca858b62\",\"name\":\"cpratts\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/studenthub.elsevier.com\/en\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c8808fa05b4d5f7e731cf5353febf65a8d2383bf781ba840bc582016de79fdae?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c8808fa05b4d5f7e731cf5353febf65a8d2383bf781ba840bc582016de79fdae?s=96&d=mm&r=g\",\"caption\":\"cpratts\"},\"url\":\"https:\/\/studenthub.elsevier.com\/en\/author\/cpratts\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Dermatomes and Myotomes - Student Hub EN","description":"Learn the importance of dermatomes and myotomes for neuro exams. Master this key anatomy concept for success in your healthcare studies.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/","og_locale":"en_US","og_type":"article","og_title":"Dermatomes and Myotomes - Student Hub EN","og_description":"Learn the importance of dermatomes and myotomes for neuro exams. Master this key anatomy concept for success in your healthcare studies.","og_url":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/","og_site_name":"Student Hub EN","article_published_time":"2025-06-30T16:48:01+00:00","article_modified_time":"2025-07-25T14:28:56+00:00","og_image":[{"width":690,"height":360,"url":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp","type":"image\/webp"}],"author":"cpratts","twitter_card":"summary_large_image","twitter_misc":{"Written by":"cpratts","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/","url":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/","name":"Dermatomes and Myotomes - Student Hub EN","isPartOf":{"@id":"https:\/\/studenthub.elsevier.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#primaryimage"},"image":{"@id":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#primaryimage"},"thumbnailUrl":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp","datePublished":"2025-06-30T16:48:01+00:00","dateModified":"2025-07-25T14:28:56+00:00","author":{"@id":"https:\/\/studenthub.elsevier.com\/en\/#\/schema\/person\/52718ee2f196a12d48b0541dca858b62"},"description":"Learn the importance of dermatomes and myotomes for neuro exams. Master this key anatomy concept for success in your healthcare studies.","breadcrumb":{"@id":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#primaryimage","url":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp","contentUrl":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp","width":690,"height":360},{"@type":"BreadcrumbList","@id":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/dermatomes-and-myotomes\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/studenthub.elsevier.com\/en\/"},{"@type":"ListItem","position":2,"name":"Dermatomes and Myotomes"}]},{"@type":"WebSite","@id":"https:\/\/studenthub.elsevier.com\/en\/#website","url":"https:\/\/studenthub.elsevier.com\/en\/","name":"Student Hub EN","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/studenthub.elsevier.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/studenthub.elsevier.com\/en\/#\/schema\/person\/52718ee2f196a12d48b0541dca858b62","name":"cpratts","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/studenthub.elsevier.com\/en\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c8808fa05b4d5f7e731cf5353febf65a8d2383bf781ba840bc582016de79fdae?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c8808fa05b4d5f7e731cf5353febf65a8d2383bf781ba840bc582016de79fdae?s=96&d=mm&r=g","caption":"cpratts"},"url":"https:\/\/studenthub.elsevier.com\/en\/author\/cpratts\/"}]}},"jetpack_featured_media_url":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Dermatomas-690x360-1.webp","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":786,"url":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/nerve-plexuses-somatic-and-visceral\/","url_meta":{"origin":782,"position":0},"title":"Nerve Plexuses: Somatic and Visceral","author":"cpratts","date":"June 30, 2025","format":false,"excerpt":"Nerve plexuses are either somatic or visceral and combine fibers from different sources or levels to form new nerves with specific targets or destinations (Fig. 1.51). Plexuses of the enteric system also generate reflex activity independent of the CNS. Fig. 1.51: Nerve Plexuses. Adapted from Drake, Mitchell & Vogl. Gray\u2019s\u2026","rel":"","context":"In &quot;Anatomy basics&quot;","block_context":{"text":"Anatomy basics","link":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/"},"img":{"alt_text":"","src":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Plexos-Nerviosos-690x360-1.webp","width":350,"height":200,"srcset":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Plexos-Nerviosos-690x360-1.webp 1x, https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Plexos-Nerviosos-690x360-1.webp 1.5x"},"classes":[]},{"id":778,"url":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/sympathetic-system\/","url_meta":{"origin":782,"position":1},"title":"Sympathetic system","author":"cpratts","date":"June 30, 2025","format":false,"excerpt":"The sympathetic part of the autonomic division of the PNS leaves thoracolumbar regions of the spinal cord with the somatic components of spinal nerves T1 to L2 (Fig. 1.44). On each side, a paravertebral sympathetic trunk extends from the base of the skull to the inferior end of the vertebral\u2026","rel":"","context":"In &quot;Anatomy basics&quot;","block_context":{"text":"Anatomy basics","link":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/"},"img":{"alt_text":"","src":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Sistema-Simpatico-690x360-1.webp","width":350,"height":200,"srcset":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Sistema-Simpatico-690x360-1.webp 1x, https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomia-Sistema-Simpatico-690x360-1.webp 1.5x"},"classes":[]},{"id":771,"url":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/parasympathetic-system\/","url_meta":{"origin":782,"position":2},"title":"Parasympathetic system","author":"cpratts","date":"June 30, 2025","format":false,"excerpt":"The parasympathetic part of the autonomic division of the PNS (Fig. 1.49) leaves cranial and sacral regions of the CNS in association with: cranial nerves III, VII, IX, and X: III, VII, and IX carry parasympathetic fibers to structures within the head and neck only, whereas X (the vagus nerve)\u2026","rel":"","context":"In &quot;Anatomy basics&quot;","block_context":{"text":"Anatomy basics","link":"https:\/\/studenthub.elsevier.com\/en\/anatomy-basics\/"},"img":{"alt_text":"","src":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomi\u2560ua-Sistema-Parasimpatico-690x360-1.webp","width":350,"height":200,"srcset":"https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomi\u2560ua-Sistema-Parasimpatico-690x360-1.webp 1x, https:\/\/studenthub.elsevier.com\/en\/wp-content\/uploads\/sites\/10\/2025\/06\/Header-Basicos-Anatomi\u2560ua-Sistema-Parasimpatico-690x360-1.webp 1.5x"},"classes":[]},{"id":1168,"url":"https:\/\/studenthub.elsevier.com\/en\/question-bank\/anatomy\/sensory-innervation\/","url_meta":{"origin":782,"position":3},"title":"Which dermatome is responsible for cutaneous sensory innervation covering the palmar aspect of the little finger?","author":"camille","date":"July 24, 2025","format":false,"excerpt":"","rel":"","context":"In &quot;Anatomy&quot;","block_context":{"text":"Anatomy","link":"https:\/\/studenthub.elsevier.com\/en\/question-bank\/anatomy\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1245,"url":"https:\/\/studenthub.elsevier.com\/en\/question-bank-nursing\/sympathetic-preganglionic-neurones\/","url_meta":{"origin":782,"position":4},"title":"Sympathetic preganglionic neurones","author":"cpratts","date":"July 24, 2025","format":false,"excerpt":"","rel":"","context":"In &quot;Anatomy&quot;","block_context":{"text":"Anatomy","link":"https:\/\/studenthub.elsevier.com\/en\/question-bank-nursing\/anatomy-question-bank-nursing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1715,"url":"https:\/\/studenthub.elsevier.com\/en\/question-bank-nursing\/sympathetic-preganglionic-neurones-2\/","url_meta":{"origin":782,"position":5},"title":"Sympathetic preganglionic neurones","author":"cpratts","date":"July 25, 2025","format":false,"excerpt":"","rel":"","context":"In &quot;Physiology&quot;","block_context":{"text":"Physiology","link":"https:\/\/studenthub.elsevier.com\/en\/question-bank-nursing\/physiology-question-bank-nursing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/posts\/782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/users\/170"}],"replies":[{"embeddable":true,"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/comments?post=782"}],"version-history":[{"count":5,"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/posts\/782\/revisions"}],"predecessor-version":[{"id":1911,"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/posts\/782\/revisions\/1911"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/media\/783"}],"wp:attachment":[{"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/media?parent=782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/categories?post=782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/studenthub.elsevier.com\/en\/wp-json\/wp\/v2\/tags?post=782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}