循环与呼吸的配合
Circulation & Breathing Together
了解循环系统和呼吸系统如何协同工作：肺部为血液补充氧气，心脏将血液泵送到全身，细胞利用氧气并产生二氧化碳废物，血液再将废物带回肺部呼出。
Understand how the circulatory and respiratory systems work together: the lungs oxygenate the blood, the heart pumps it around the body, cells use the oxygen and produce carbon dioxide waste, and the blood carries the waste back to the lungs to be breathed out
学习证据 / Evidence
- 描述循环过程：肺部为血液补充氧气 → 心脏将含氧血液泵送到全身 → 细胞利用氧气 → 血液将二氧化碳送回肺部
- 解释为什么运动时心率和呼吸频率会加快（肌肉需要更多氧气）
- 测量自己休息时和运动后的心率，并解释差异
- Describe the cycle: lungs add oxygen to blood → heart pumps oxygenated blood to body → cells use oxygen → blood returns CO₂ to lungs
- Explain why heart rate and breathing rate increase during exercise (muscles need more oxygen)
- Measure their own resting and post-exercise heart rate and explain the difference
评估问题 / Assessment
{{name}}能解释为什么跑步时心跳会加快——以及心脏和肺部如何协同工作，向肌肉输送更多氧气吗？
Can {{name}} explain why their heart beats faster when they run — and how their heart and lungs are working together to deliver more oxygen to their muscles?