File:Stratégies respiratoires.png
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[edit]DescriptionStratégies respiratoires.png |
Français : Le métabolisme respiratoire se déroule essentiellement dans une structure de type procaryote (soit le procaryote lui-même : bactérie ou archée, soit l'organite hérité d'une endosymbiose primitive : mitochondrie ou hydrogénosome). Chez les organismes complexes, la fonction respiratoire n'a jamais été déléguée à un organe ou à un tissu spécialisé, notamment parce que l'ATP ne peut être stocké. Ceci oblige à assurer une continuité entre le milieu extérieur et chaque cellule pour amener l'oxydant initial (oxygène si resp. aérobie) et évacuer les produits finaux (dioxyde de carbone et eau si resp. aérobie). Les organismes ont donc développé diverses stratégies de captation et de transit. Le processus comprend ainsi 1 à 4 compartiments avec des frontières à franchir. La ventilation sert à créer un flux du milieu dans l'environnement proche ou dans un circuit pénétrant. La circulation permet de transporter les molécules impliquées dans un liquide physiologique en mouvement. |
Date | |
Source | Own work |
Author | Channer (Bruno NAVEZ) |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:30, 29 August 2021 | 3,394 × 2,210 (244 KB) | Channer (talk | contribs) | terme ventilation uniquement dans l'air | |
11:39, 29 August 2021 | 3,366 × 2,213 (242 KB) | Channer (talk | contribs) | Eponges remplace Ascidies (celles-ci ont un système circulatoire) | ||
16:34, 21 August 2021 | 3,399 × 2,217 (242 KB) | Channer (talk | contribs) | cosmetic changes | ||
14:32, 21 August 2021 | 3,410 × 2,207 (245 KB) | Channer (talk | contribs) | colorations accessibles | ||
14:43, 18 August 2021 | 3,323 × 2,362 (251 KB) | Channer (talk | contribs) | Uploaded own work with UploadWizard |
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