2025newtalk 國中生物單元四: 紅血球的奇幻漂流-人體雙循環解析

以第一人稱紅血球的視角，生動地描述人體的雙循環系統，即肺循環和體循環。將心臟比喻為高效的物流總部，解釋血液如何經由四個心腔進行氧氣與二氧化碳的交換及運輸。其中，右心室負責將缺氧血送往肺部（低壓的肺循環），而強勁的左心室則負責將充氧血打向全身（高壓的體循環）。強調動脈與靜脈的正確定義是依據血流方向而非含氧量，並利用「8 字形」的視覺化概念來總結這兩個不混淆的循環路徑。最後透過肌肉注射藥物如何繞行全身的實例，印證了雙循環系統的重要性及其運作方式。聽完後可以自主進行線上測驗，檢視學習成效喔~(需要登入gemini) 測驗網址  https://gemini.google.com/share/a98a7f1d29ed Powered by Firstory Hosting

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2025newtalk 國中生物單元四: 紅血球的奇幻漂流-人體雙循環解析

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