{"id":2353,"date":"2025-05-29T22:21:00","date_gmt":"2025-05-29T19:21:00","guid":{"rendered":"https:\/\/cedra.academy\/?p=2353"},"modified":"2025-09-09T22:36:02","modified_gmt":"2025-09-09T19:36:02","slug":"organele-sistemului-respirator-structura-si-rol","status":"publish","type":"post","link":"https:\/\/cedra.academy\/?p=2353","title":{"rendered":"Organele sistemului respirator \u2013 structur\u0103 \u0219i rol"},"content":{"rendered":"\n
Organele sistemului respirator: structura \u0219i rolul esential PPTX l<\/a>Descarc\u0103<\/a><\/div>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Sistemul respirator este alc\u0103tuit dintr-un ansamblu de organe care asigur\u0103 schimbul permanent de gaze dintre organism \u0219i mediul extern: oxigenul (O\u2082) este adus \u00een organism, iar dioxidul de carbon (CO\u2082) rezultat din procesele metabolice este eliminat. Prin aceast\u0103 func\u021bie esen\u021bial\u0103, sistemul respirator men\u021bine echilibrul necesar desf\u0103\u0219ur\u0103rii vie\u021bii.<\/p>\n\n\n\n

1. C\u0103ile respiratorii superioare<\/h3>\n\n\n\n

a) Fosele nazale<\/strong><\/p>\n\n\n\n

    \n
  • Structur\u0103:<\/strong> Sunt dou\u0103 cavit\u0103\u021bi situate \u00een interiorul nasului, separate printr-un sept nazal. Ele comunic\u0103 cu exteriorul prin n\u0103ri \u0219i cu faringele prin coane. Mucoasa nazal\u0103 este bogat\u0103 \u00een vase de s\u00e2nge \u0219i celule secretoare de mucus.<\/li>\n\n\n\n
  • Rol:<\/strong> \u00cenc\u0103lzesc, filtreaz\u0103 \u0219i umidific\u0103 aerul inspirat. Firele de p\u0103r \u0219i mucusul re\u021bin praful \u0219i microbii.<\/li>\n<\/ul>\n\n\n\n

    b) Faringele<\/strong><\/p>\n\n\n\n

      \n
    • Structur\u0103:<\/strong> Tub musculo-membranos comun sistemului respirator \u0219i digestiv.<\/li>\n\n\n\n
    • Rol:<\/strong> Conduce aerul din fosele nazale spre laringe, fiind o zon\u0103 de trecere.<\/li>\n<\/ul>\n\n\n\n

      c) Laringele<\/strong><\/p>\n\n\n\n

        \n
      • Structur\u0103:<\/strong> Organ cartilaginos, \u00een interiorul c\u0103ruia se afl\u0103 corzile vocale. Este protejat de epiglot\u0103, care \u00eempiedic\u0103 p\u0103trunderea alimentelor \u00een c\u0103ile respiratorii.<\/li>\n\n\n\n
      • Rol:<\/strong> Asigur\u0103 trecerea aerului spre trahee \u0219i particip\u0103 la formarea sunetelor (func\u021bia de fonare).<\/li>\n<\/ul>\n\n\n\n

        2. C\u0103ile respiratorii inferioare<\/h3>\n\n\n\n

        a) Traheea<\/strong><\/p>\n\n\n\n

          \n
        • Structur\u0103:<\/strong> Tub elastic de aproximativ 12 cm lungime, format din inele cartilaginoase incomplete, unite prin \u021besut fibros. Este tapetat\u0103 cu mucoas\u0103 ciliat\u0103.<\/li>\n\n\n\n
        • Rol:<\/strong> Conduce aerul spre bronhii, iar cilii mucoasei elimin\u0103 impurit\u0103\u021bile prin mi\u0219c\u0103ri de \u201em\u0103turare\u201d.<\/li>\n<\/ul>\n\n\n\n

          b) Bronhiile<\/strong><\/p>\n\n\n\n

            \n
          • Structur\u0103:<\/strong> Traheea se bifurc\u0103 \u00een dou\u0103 bronhii principale (dreapt\u0103 \u0219i st\u00e2ng\u0103), care p\u0103trund \u00een pl\u0103m\u00e2ni. Acestea se ramific\u0103 \u00een bronhii secundare \u0219i ter\u021biare, form\u00e2nd arborele bron\u0219ic.<\/li>\n\n\n\n
          • Rol:<\/strong> Distribuie aerul c\u0103tre toate regiunile pl\u0103m\u00e2nilor.<\/li>\n<\/ul>\n\n\n\n

            c) Bronhiolele<\/strong><\/p>\n\n\n\n

              \n
            • Structur\u0103:<\/strong> Ramifica\u021bii fine ale bronhiilor, care nu mai au inele cartilaginoase, ci pere\u021bi sub\u021biri, elastici. Se termin\u0103 \u00een sacii alveolari.<\/li>\n\n\n\n
            • Rol:<\/strong> Asigur\u0103 leg\u0103tura dintre bronhii \u0219i alveolele pulmonare.<\/li>\n<\/ul>\n\n\n\n

              3. Pl\u0103m\u00e2nii<\/h3>\n\n\n\n
                \n
              • Structur\u0103:<\/strong> Sunt organe pereche, localizate \u00een cavitatea toracic\u0103, protejate de cutia toracic\u0103 \u0219i \u00eenvelite de pleur\u0103 (dou\u0103 foi\u021be: pleura visceral\u0103 \u0219i pleura parietal\u0103, \u00eentre care exist\u0103 lichid pleural).\n
                  \n
                • Pl\u0103m\u00e2nul drept are trei lobi, iar pl\u0103m\u00e2nul st\u00e2ng are doi lobi (pentru a face loc inimii).<\/li>\n\n\n\n
                • Unit\u0103\u021bile func\u021bionale ale pl\u0103m\u00e2nului sunt alveolele pulmonare<\/strong>, mici vezicule cu pere\u021bi sub\u021biri, bogat vascularizate.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                • Rol:<\/strong> Reprezint\u0103 sediul schimbului de gaze. \u00cen alveole are loc trecerea oxigenului din aer \u00een s\u00e2nge \u0219i eliminarea dioxidului de carbon din s\u00e2nge \u00een aerul expirat.<\/li>\n<\/ul>\n\n\n\n

                  4. Mi\u0219c\u0103rile respiratorii<\/h3>\n\n\n\n
                    \n
                  • Inspirul<\/strong>: aerul p\u0103trunde \u00een pl\u0103m\u00e2ni prin contrac\u021bia mu\u0219chilor intercostali \u0219i a diafragmei.<\/li>\n\n\n\n
                  • Expirul<\/strong>: aerul este eliminat prin relaxarea mu\u0219chilor toracici \u0219i revenirea cutiei toracice.<\/li>\n<\/ul>\n\n\n\n

                    5. Rolul sistemului respirator<\/h3>\n\n\n\n
                      \n
                    • Aduce oxigen \u00een organism, indispensabil proceselor de oxidare celular\u0103.<\/li>\n\n\n\n
                    • Elimin\u0103 dioxidul de carbon, produs de metabolism.<\/li>\n\n\n\n
                    • Protejeaz\u0103 organismul prin filtrarea aerului \u0219i ap\u0103rarea \u00eempotriva agen\u021bilor patogeni.<\/li>\n\n\n\n
                    • Particip\u0103 la men\u021binerea echilibrului acido-bazic al s\u00e2ngelui.<\/li>\n\n\n\n
                    • Contribuie la fonare (emiterea sunetelor) prin corzile vocale.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                      Sistemul respirator este alc\u0103tuit dintr-un ansamblu de organe care asigur\u0103 schimbul permanent de gaze dintre organism \u0219i mediul extern: oxigenul (O\u2082) este adus \u00een organism, iar dioxidul de carbon (CO\u2082) […]<\/p>\n","protected":false},"author":1,"featured_media":2354,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,10],"tags":[],"_links":{"self":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/2353"}],"collection":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2353"}],"version-history":[{"count":1,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/2353\/revisions"}],"predecessor-version":[{"id":2357,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/2353\/revisions\/2357"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/media\/2354"}],"wp:attachment":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}