心脏结构与双循环
Heart Structure & Double Circulation
描述心脏的结构（四个腔室、瓣膜、冠状动脉），并解释它如何在双循环系统中将缺氧血泵送到肺部、将含氧血泵送到全身。
Describe the structure of the heart (four chambers, valves, coronary arteries) and explain how it pumps deoxygenated blood to the lungs and oxygenated blood to the body in a double circulatory system
学习证据 / Evidence
- 标注心脏示意图，显示心房、心室、瓣膜、主动脉、腔静脉和肺血管。
- 追踪血液在双循环系统中的流动路径。
- 解释瓣膜在防止血液倒流中的作用。
- 比较动脉、静脉和毛细血管。
- Labels a diagram of the heart showing atria, ventricles, valves, aorta, vena cava, and pulmonary vessels
- Traces the route of blood through the double circulatory system
- Explains the role of valves in preventing backflow
- Compares arteries, veins, and capillaries
评估问题 / Assessment
如果{{name}}感觉到了自己的心跳，他们能否描述心脏正在做什么——解释心脏的两侧、每一侧血液流向哪里，以及为什么我们需要双循环？
If {{name}} felt their heartbeat, could they describe what the heart is doing — explaining the two sides of the heart, where the blood goes from each side, and why we need a double loop?