{"id":6555,"date":"2026-04-16T13:54:16","date_gmt":"2026-04-16T10:54:16","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/glossary\/%d1%81uir-chevelu\/"},"modified":"2026-04-27T14:35:33","modified_gmt":"2026-04-27T11:35:33","slug":"%d1%81uir-chevelu","status":"publish","type":"glossary_item","link":"https:\/\/wiki.dev.voka.io\/fr\/glossaire\/%d1%81uir-chevelu\/","title":{"rendered":"Cuir chevelu"},"content":{"rendered":"\n

Cuir chevelu (du mot anglais scalp<\/em>, du latin scalpere<\/em> \u2014 couper, gratter) est un ensemble stratifi\u00e9 de tissus mous, couvrant enti\u00e8rement le cr\u00e2ne humain depuis les arcs sourciliers \u00e0 l’avant jusqu’\u00e0 la ligne nuchale sup\u00e9rieure \u00e0 l’arri\u00e8re. <\/p>\n\n

Cette structure multicouche remplit des fonctions de barri\u00e8re, d’amortissement et de thermor\u00e9gulation, prot\u00e9geant efficacement l’enc\u00e9phale des influences externes.<\/p>\n\n

\u00c9tiologie et physiopathologie<\/strong><\/h2>\n\n

L’anatomie de cette r\u00e9gion est d\u00e9crite dans la m\u00e9decine internationale par une r\u00e8gle mn\u00e9motechnique stricte bas\u00e9e sur les lettres du mot anglais SCALP, o\u00f9 chaque lettre repr\u00e9sente une couche fonctionnelle distincte :<\/p>\n\n

    \n
  1. S (Skin \u2014 Peau) :<\/strong> La couche la plus ext\u00e9rieure. Se distingue par une densit\u00e9 \u00e9lev\u00e9e, une abondance de follicules pileux, de glandes s\u00e9bac\u00e9es et sudoripares.<\/li>\n\n\n\n
  2. C (Connective tissue \u2014 Tissu conjonctif) :<\/strong> Couche dense de tissu adipeux sous-cutan\u00e9. Travers\u00e9 par des septums fibreux rigides, qui divisent le gras en petits lobules. Ici passe un r\u00e9seau dense de vaisseaux sanguins.<\/li>\n\n\n\n
  3. A (Aponeurosis \u2014 Apon\u00e9vrose) :<\/strong> Casque tendineux, plaque fibreuse solide reliant les muscles frontaux et occipitaux.<\/li>\n\n\n\n
  4. L (Loose areolar connective tissue \u2014 Tissu conjonctif ar\u00e9olaire l\u00e2che) :<\/strong> Appel\u00e9 \u00ab\u00a0zone dangereuse\u00a0\u00bb. Cet espace n’a pas de cloisons denses, ce qui permet aux trois premi\u00e8res couches de glisser librement sur l’os.<\/li>\n\n\n\n
  5. P (Pericranium \u2014 P\u00e9ricr\u00e2ne) :<\/strong> La couche externe des os du cr\u00e2ne, \u00e9troitement fusionn\u00e9e uniquement au niveau des sutures.<\/li>\n<\/ol>\n\n

    Les trois premi\u00e8res couches (peau, tissu adipeux et apon\u00e9vrose) sont \u00e9troitement soud\u00e9es entre elles et, lors de traumatismes (par exemple, lors de l’\u00e9corchement), se d\u00e9tachent en bloc pr\u00e9cis\u00e9ment au niveau de la couche de tissu conjonctif l\u00e2che.<\/p>\n\n

    Importance clinique<\/strong><\/h2>\n\n

    La caract\u00e9ristique clinique principale des blessures du cuir chevelu est un saignement art\u00e9riel profus. Les vaisseaux sanguins sont bien int\u00e9gr\u00e9s dans les septums fibreux de la deuxi\u00e8me couche. Lors de la coupe, leurs parois ne s’effondrent pas, ce qui provoque la b\u00e9ance des plaies, pouvant entra\u00eener une importante perte de sang m\u00eame avec une petite coupure.<\/p>\n\n

    D’un autre c\u00f4t\u00e9, le riche approvisionnement sanguin ph\u00e9nom\u00e9nal fournit aux tissus du cr\u00e2ne un potentiel r\u00e9g\u00e9n\u00e9ratif exceptionnel. <\/p>\n","protected":false},"excerpt":{"rendered":"

    Cuir chevelu (du mot anglais scalp, provenant du latin scalpere<\/em> \u2014 couper, gratter) est un ensemble stratifi\u00e9 de tissus mous, couvrant enti\u00e8rement le cr\u00e2ne humain depuis les arcs sourciliers \u00e0 l’avant jusqu’\u00e0 la ligne nuchale sup\u00e9rieure \u00e0 l’arri\u00e8re. <\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-6555","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"\nCuir chevelu : d\u00e9finition m\u00e9dicale et description | Voka Wiki<\/title>\n<meta name=\"description\" content=\"Cuir chevelu (du mot anglais scalp, provenant du latin scalpere \u2014 couper, gratter) est un ensemble stratifi\u00e9 de tissus mous, couvrant enti\u00e8rement le cr\u00e2ne humain depuis les arcs sourciliers \u00e0 l'avant jusqu'\u00e0 la ligne nuchale sup\u00e9rieure \u00e0 l'arri\u00e8re.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, 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