QUESTION IMAGE
Question
when respiration occurs within cells, carbon dioxide is released as waste. which system transports carbon dioxide for removal from the body?
o a. immune system
o b. digestive system
o c. excretory system
o d. cardiovascular system
Brief Explanations
- 免疫系统(immune system)主要功能是抵御病原体入侵等,与运输二氧化碳无关。
- 消化系统(digestive system)负责食物的消化和营养吸收,不运输二氧化碳。
- 排泄系统(excretory system)主要处理如尿液等代谢废物,二氧化碳主要靠心血管系统运输。
- 心血管系统(cardiovascular system)中的血液可以运输二氧化碳,将其从组织细胞运输到肺部排出体外。
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D. cardiovascular system