[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-563964-105":53,"doc-detail-563964-en":127},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":120,"head_meta":122,"extra_data":124,"updated_unix":126},105,"en","nerve-disc-principal-dermatomes","Nerve-Disc-Principal-Dermatomes","","This document provides a comprehensive overview of human dermatomes and peripheral nerve testing, serving as a clinical reference for understanding segmental nerve distribution and sensory-motor correlations. It systematically details the anatomical relationship between spinal disc levels, nerve roots, reflex responses, specific muscle groups, and corresponding sensory fields. The content includes a specialized breakdown of primary dermatomes—from cervical to sacral segments—and correlates individual nerves like the radial, ulnar, and median nerves with their respective motor and sensory testing procedures. Through structured tables, the material effectively maps physical symptoms to neurological origins, making it an essential diagnostic tool for healthcare professionals and students in anatomy, neurology, or physical therapy. The document clarifies the complex overlap of dermatomal segments across the body, offering clear guidelines for neurological assessment of the upper and lower limbs. This clinical guide facilitates accurate localization of potential spinal or peripheral nerve pathologies by providing clinicians with precise testing benchmarks for both reflex activity and sensory perception across different dermatomal maps.",{"@graph":63,"@context":119},[64,80,102],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/nerve-disc-principal-dermatomes/563964/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/nerve-disc-principal-dermatomes/563964.png","ImageObject",442,249,{"name":88,"@type":89},"Alex Sinclair","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-30","2026-10-12",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",10,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"Which nerve is tested by the wrist extension and thumb extension motor test?","Question",{"text":109,"@type":110},"The radial nerve is tested using wrist extension and thumb extension, with sensation assessed at the dorsal web space between the thumb and index finger.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"What reflex is associated with the C5-C6 spinal disc level?",{"text":114,"@type":110},"The C5-C6 spinal disc level is associated with the brachioradialis reflex and the biceps reflex, affecting wrist extension and biceps muscle function.",{"name":116,"@type":107,"acceptedAnswer":117},"How are sensory areas mapped for the L5-S1 spinal disc level?",{"text":118,"@type":110},"The L5-S1 spinal disc level corresponds to the S1 nerve root, which governs the gastrocnemius muscle and provides sensory innervation to the sole of the foot and the lateral aspect of the foot.","https://schema.org",{"og:url":78,"og:type":121,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":123,"canonical":78},"index,follow",{"doc_id":125,"site_id":56},563964,1792091285,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":101,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":73,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":9},1099523882182,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Nerve/Disc Principal Dermatomes  \n\n| Nerve | Motor Test | Sensation Test |\n| --- | --- | --- |\n| Radial nerve | Wrist extension Thumb extension | Dorsal web space between thumb and index finger |\n| Ulnar nerve | Abduction-little finger | Distal ulnar aspectlittle finger |\n| Median nerve | Thumb pinch\u003Cbr>Opposition of thumb | Distal radial aspectindex finger |\n| Axillary nerve | Deltoid | Lateral arm- deltoid patch on upper arm |\n| Musculocutaneous nerve | Biceps | Lateral forearm |\n\n\n| Disc | Root | Reflex | Muscles | Sensation |\n| --- | --- | --- | --- | --- |\n| C4-C5 | C5 | Biceps reflex | Deltoid Biceps | Lateral arm Axillary nerve |\n| C5-C6 | C6 | Brachioradialis reflex (Biceps reflex) | Wrist Extension Biceps | Lateral forearm Musculocutaneous nerve |\n| C6-C7 | C7 | Triceps reflex | Wrist flexors Finger Extension Triceps | Middle finger |\n| C7-T 1 | C8 |  | Finger Extension Hand Intrinsics | Medial forearm Med. ant. branch. Cutaneous nerve |\n| T 1-T2 | T 1 |  | Hand Intrinsics | Medial arm\u003Cbr>Med. branch. Cutaneous nerve |\n| L3-L4 | L4 | Patellar reflex | Anterior tibialis | Medial leg and\u003Cbr>medial foot |\n| L4-L5 | L5 | None\u003Cbr>? Internal hamstring | Extensor hallucis longus Peroneus longus | Lateral leg and\u003Cbr>dorsum of foot |\n| L5-S1 | S1 | Achilles Internal hamstring External hamstring | Gastrocnemius | Sole of foot\u003Cbr>Lateral foot |","cbCaikMYkNoEA1uC","https://ap.wps.com/l/cbCaikMYkNoEA1uC","pdf",473096,"English","# Peripheral Nerve Testing\n## Motor and Sensory Testing Correlations\n# Spinal Disc and Dermatome Mapping\n## Cervical Segment Nerve Distribution\n## Lumbar and Sacral Segment Nerve Distribution","[{\"question\":\"Which nerve is tested by the wrist extension and thumb extension motor test?\",\"answer\":\"The radial nerve is tested using wrist extension and thumb extension, with sensation assessed at the dorsal web space between the thumb and index finger.\"},{\"question\":\"What reflex is associated with the C5-C6 spinal disc level?\",\"answer\":\"The C5-C6 spinal disc level is associated with the brachioradialis reflex and the biceps reflex, affecting wrist extension and biceps muscle function.\"},{\"question\":\"How are sensory areas mapped for the L5-S1 spinal disc level?\",\"answer\":\"The L5-S1 spinal disc level corresponds to the S1 nerve root, which governs the gastrocnemius muscle and provides sensory innervation to the sole of the foot and the lateral aspect of the foot.\"}]","Nerve-Disc-Principal-Dermatomes | PDF",1791839596]