{"id":5066,"date":"2022-04-05T09:00:00","date_gmt":"2022-04-05T07:00:00","guid":{"rendered":"https:\/\/audiotek.es\/?p=2345"},"modified":"2026-08-19T10:36:17","modified_gmt":"2026-08-19T08:36:17","slug":"parts-de-lorella","status":"publish","type":"post","link":"https:\/\/audiotek.es\/ca\/partes-del-oido\/","title":{"rendered":"Quines s\u00f3n les parts de l'orella? Una guia completa de la seva anatomia"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Parts de l'o\u00efda: anatomia completa de l'o\u00efda humana<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>o\u00efda<\/strong> \u00e9s un dels \u00f2rgans sensorials m\u00e9s complexos i fascinants del cos hum\u00e0. La seva funci\u00f3 principal \u00e9s captar les ones sonores de l'entorn i convertir-les en senyals nerviosos que el cervell pugui interpretar. Per entendre com funciona l'o\u00efda \u2014 i per qu\u00e8 <a href=\"\/ca\/perdua-auditiva\/\">p\u00e8rdua auditiva<\/a>\u2014 \u00e9s essencial con\u00e8ixer el <strong>les tres parts principals de l'orella<\/strong>: l'orella externa, l'orella mitjana i l'orella interna.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L'orella externa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L'orella externa \u00e9s la part visible de l'orella i la primera a rebre el so. Consisteix en dues estructures principals:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">El pavell\u00f3 auricular (orella)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>pavell\u00f3 auricular<\/strong>, comunament coneguda com l'orella, \u00e9s l'estructura cartilaginosa que sobresurt del costat del cap. La seva forma irregular no \u00e9s casualitat: est\u00e0 dissenyada per captar i concentrar les ones sonores, dirigint-les cap al conducte auditiu. A m\u00e9s, la seva geometria \u00fanica ens ajuda a localitzar l'origen dels sons, permetent-nos distingir si provenen de davant, de darrere, de dalt o de sota.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">El canal auditiu extern<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>canal auditiu externs<\/strong> \u00e9s un tub d'aproximadament 2,5 cm de llarg que connecta l'orella externa amb el timpan. Est\u00e0 folrat per una pell que produeix <strong>cerum<\/strong> (cera de l'o\u00efda), una subst\u00e0ncia protectora que atrapa pols, bacteris i agents externs. El canal tamb\u00e9 amplifica lleugerament els sons de freq\u00fc\u00e8ncia mitjana abans que arribin al timp\u00e0.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L'o\u00efda mitjana<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>orella mitjana<\/strong> \u00e9s una cavitat plena d'aire situada darrere del timp\u00e0. La seva funci\u00f3 principal \u00e9s <strong>amplificar i transmetre<\/strong> vibracions sonores de l'o\u00efda externa a l'o\u00efda interna. Es compon dels components seg\u00fcents:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">El timp\u00e0 (membrana timp\u00e0nica)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>Timp\u00e0<\/strong> \u00c9s una membrana fina i tensa d'uns 8\u20139 mm de di\u00e0metre que actua com a barrera entre l'o\u00efda externa i l'o\u00efda mitjana. Quan les ones sonores la colpegen, vibra a una freq\u00fc\u00e8ncia i amb una intensitat proporcional al so rebut. Un timpan perforat o una inflamaci\u00f3 cr\u00f2nica pot causar una p\u00e8rdua auditiva significativa i hauria de ser tractada per un especialista.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Els ossets: martell, enclusa i estrep<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Els <strong>petits ossos<\/strong> Aquests s\u00f3n els tres ossos m\u00e9s petits del cos hum\u00e0 i formen una cadena mec\u00e0nica que transmet i amplifica les vibracions del timpan:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Martell (malleus):<\/strong> Est\u00e0 directament adherit al timpan i \u00e9s el primer a rebre les vibracions.<\/li>\n<li><strong>Enclusa (incus):<\/strong> Actua com a enlla\u00e7 intermediari entre el martell i l'estri.<\/li>\n<li><strong>Estapes:<\/strong> \u00c9s l'os m\u00e9s petit del cos hum\u00e0. Transmet vibracions a la finestra oval del timpan intern.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Junts, els tres ossicles multipliquen la for\u00e7a de les vibracions sonores aproximadament <strong>22 vegades<\/strong>, que permet amplificar els sons febles prou per estimular les c\u00e8l\u00b7lules de l'o\u00efda interna.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La trompa d'Eustaqui<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La <strong>trompa d&#039;Eustaqui<\/strong> Connecta l'o\u00efda mitjana amb la nasofaringe. La seva funci\u00f3 \u00e9s igualar la pressi\u00f3 de l'aire a l'o\u00efda mitjana amb la pressi\u00f3 atmosf\u00e8rica externa, cosa que \u00e9s essencial perqu\u00e8 el timp\u00e0 vibri correctament. S'obre en empassar, badallar o mastegar. Si no funciona correctament, aix\u00f2 pot causar una sensaci\u00f3 d'o\u00efdes taponades, dolor i una major susceptibilitat a infeccions de l'o\u00efda mitjana.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L'o\u00efda interna<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>orella interna<\/strong>, tamb\u00e9 conegut com el laberint, \u00e9s la part m\u00e9s complexa. Consisteix en cavitats i canals plens de l\u00edquid i \u00e9s responsable tant de la <strong>audici\u00f3<\/strong> aix\u00ed com el <strong>equilibri<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La c\u00f2clea (cargol)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La <strong>c\u00f2clea<\/strong> \u00e9s una cavitat en forma de cargol que, quan es desplega, mesura uns 35 mm de longitud. \u00c9s l'\u00f2rgan central de l'o\u00efda. A l'interior hi ha el <strong>\u00d2rgan de Corti<\/strong>, que acull aproximadament 15.000 <strong>c\u00e8l\u00b7lules ciliades<\/strong>. Aquestes c\u00e8l\u00b7lules converteixen les vibracions mec\u00e0niques en impulsos el\u00e8ctrics que s'envien al cervell a trav\u00e9s del nervi auditiu. Les c\u00e8l\u00b7lules ciliades s\u00f3n molt vulnerables: l'exposici\u00f3 prolongada a sorolls forts o l'envelliment pot causar-los danys permanents. <em>irreversible<\/em>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">El nervi auditiu (nervi coclear)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>nervi auditiu<\/strong> Transmet els impulsos el\u00e8ctrics generats a la c\u00f2clea fins al c\u00f2rtex auditiu del cervell, on s'interpreten com a sons. Forma part del vuit\u00e8 nervi cranial (nervi vestibulocochlear). El dany en aquest nervi pot causar <strong>hipoac\u00fasia neurosensorial<\/strong>, el tipus de p\u00e8rdua auditiva m\u00e9s com\u00fa en els adults.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">El sistema vestibular<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>sistema vestibular<\/strong> Consisteix en tres canals semicirculars i el vest\u00edbul (\u00fatricle i sac\u00fale). La seva funci\u00f3 \u00e9s detectar els moviments del cap i mantenir l'equilibri. Els trastorns del sistema vestibular poden causar vertigen, marejos i inestabilitat. El <a href=\"\/ca\/loida\/\">Malaltia de M\u00e9ni\u00e8re<\/a>, per exemple, afecta tant la c\u00f2clea com el vest\u00edbul.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Com funciona el proc\u00e9s auditiu, pas a pas<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Les ones sonores s\u00f3n captades per l'orella externa i dirigides cap al conducte auditiu extern.<\/li>\n<li>Les ones sonores fan vibrar el timp\u00e0.<\/li>\n<li>Les vibracions s'amplifiquen i es transmeten a trav\u00e9s dels ossicles: martell \u2192 enuix \u2192 finestra oval.<\/li>\n<li>L'\u00f2rgan de Corti transmet les vibracions a la finestra oval, que connecta amb la c\u00f2clea.<\/li>\n<li>A la c\u00f2clea, les c\u00e8l\u00b7lules ciliades converteixen les vibracions en senyals el\u00e8ctrics.<\/li>\n<li>El nervi auditiu transmet aquests senyals al c\u00f2rtex auditiu del cervell.<\/li>\n<li>El cervell interpreta els senyals i els reconeix com a sons.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Les afeccions i problemes d'orella m\u00e9s comuns<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Comprendre l'anatomia de l'o\u00efda ens ajuda a entendre les causes dels problemes d'audici\u00f3 m\u00e9s comuns:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>P\u00e8rdua auditiva conductiva:<\/strong> Que s'origina a l'o\u00efda externa o mitjana (obstrucci\u00f3 per cerumen, perforaci\u00f3 del timpan, otosclerosi, otitis mitjana).<\/li>\n<li><strong>P\u00e8rdua auditiva neurosensorial:<\/strong> Originant-se a la c\u00f2clea o al nervi auditiu (p\u00e8rdua auditiva relacionada amb l'edat, soroll, ototoxicitat).<\/li>\n<li><strong>Tinnitus:<\/strong> La percepci\u00f3 de sons de pit o de tinc-tinc sense cap font sonora externa.<\/li>\n<li><strong>Vertigen parox\u00edstic posicional benigne:<\/strong> Causat per part\u00edcules despla\u00e7ades en el sistema vestibular.<\/li>\n<li><strong>Malaltia de Meni\u00e8re:<\/strong> Trastorn de l'o\u00efda interna amb episodis de vertigen, p\u00e8rdua d'audici\u00f3 fluctuanta i tinnitus.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Quan s'ha de consultar un especialista?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Si experimentes algun d'aquests s\u00edmptomes, et recomanem visitar un <a href=\"\/ca\/centre-auditiu-barcelona\/\">centre auditiu a Barcelona<\/a> com Audiotek:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dificultat per entendre converses, especialment en entorns sorollosos.<\/li>\n<li>Una sensaci\u00f3 d'orelles taponades o plenes.<\/li>\n<li>Roncament o brunzit persistent a les orelles (<a href=\"\/ca\/loida\/tinnitus-o-acufens\/\">tinnitus<\/a>).<\/li>\n<li>Vertigen o problemes d'equilibri.<\/li>\n<li>Mal d'orella o secreci\u00f3 de l'orella.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Preguntes freq\u00fcents sobre les parts de l'orella<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Quants ossos hi ha a l'orella?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L'orella cont\u00e9 tres ossos (els ossicles): el <strong>martell<\/strong>, el <strong>enclusa<\/strong> i el <strong>estrib<\/strong>. S\u00f3n els tres ossos m\u00e9s petits del cos hum\u00e0 i es troben a l'o\u00efda mitjana.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quina part de l'orella controla l'equilibri?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>sistema vestibular<\/strong>, situat a l'o\u00efda interna, \u00e9s responsable de l'equilibri. Consisteix en tres canals semicirculars i el vest\u00edbul (\u00fatricle i sac\u00fale), que detecten els moviments i la posici\u00f3 del cap.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Qu\u00e8 \u00e9s la cerumen i per a qu\u00e8 serveix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>cerum<\/strong> \u00c9s una subst\u00e0ncia produ\u00efda per les gl\u00e0ndules del conducte auditiu extern. Protegix l'o\u00efda de bacteris, pols i cossos estranys, i ajuda a mantenir el conducte humit. En exc\u00e9s, pot formar tapons que perjudiquen l'audici\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Es poden regenerar els fol\u00b7licles pilosos?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A difer\u00e8ncia d'algunes esp\u00e8cies animals, el <strong>Els humans no poden regenerar les c\u00e8l\u00b7lules capil\u00b7lars.<\/strong> un cop danyat. Per aix\u00f2 \u00e9s essencial protegir la vostra audici\u00f3 des de ben joves: evitant l'exposici\u00f3 a sorolls forts i fent-vos proves d'o\u00efda regularment.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quina \u00e9s la difer\u00e8ncia entre 'o\u00eddo' i 'oreja'?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La <strong>orella<\/strong> \u00e9s simplement l'orella externa, la part cartilaginosa visible. La <strong>o\u00efda<\/strong> \u00e9s tot l'\u00f2rgan, que compr\u00e8n l'o\u00efda externa, l'o\u00efda mitjana i l'o\u00efda interna. En el llenguatge quotidi\u00e0, \u00abo\u00efda\u00bb i \u00abo\u00efda\u00bb s'utilitzen indistintament, tot i que t\u00e8cnicament no s\u00f3n sin\u00f2nims.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si teniu cap inquietud sobre la vostra audici\u00f3 o la d'un familiar, a <a href=\"\/ca\/audiologia\/\">Audiotek<\/a> tenim <strong>Audi\u00f2legs especialistes<\/strong> que et poden fer una revisi\u00f3 auditiva completa i gratu\u00efta.<\/p>","protected":false},"excerpt":{"rendered":"<p>Partes del o\u00eddo: anatom\u00eda completa del o\u00eddo humano El o\u00eddo es uno de los \u00f3rganos sensoriales m\u00e1s complejos y fascinantes del cuerpo humano. Su funci\u00f3n principal es captar las ondas sonoras del entorno y transformarlas en se\u00f1ales nerviosas que el cerebro puede interpretar. Para entender c\u00f3mo funciona la audici\u00f3n \u2014y por qu\u00e9 se produce la &#8230; <a title=\"Quines s\u00f3n les parts de l&#039;orella? Una guia completa de la seva anatomia\" class=\"read-more\" href=\"https:\/\/audiotek.es\/ca\/partes-del-oido\/\" aria-label=\"M\u00e9s informaci\u00f3 sobre \u00bfCu\u00e1les son las partes del O\u00eddo? Anatom\u00eda completa\">Llegeix m\u00e9s<\/a><\/p>","protected":false},"author":7,"featured_media":5067,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[19],"tags":[],"class_list":["post-5066","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-consejos-de-salud"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Partes del o\u00eddo: anatom\u00eda y funciones | Audiotek<\/title>\n<meta name=\"description\" content=\"Anatom\u00eda completa del o\u00eddo humano: o\u00eddo externo, medio e interno. 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