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The anatomy of the heart

This scene presents the location, anatomy and functioning of the central organ of the human circulatory system.

相关附加项

甲状腺

产生影响新陈代谢和身体钙平衡激素的重要的内分泌腺。

Do we become what we eat?

The lesson presents the components of a...

How does our heart beat?

This lesson presents the structure and...

心脏的电传导系统

我们的心脏产生用于自身运行的电脉冲。表示心脏的电活动的图叫心电图。

血管

人体内的三种主要血管是动脉,静脉和毛细血管。

生物构造的层级

本动画展示了从生物个体级别到细胞级别的生物构造层级。

The secret life of newborns

Learn more about the early stages of human...

How do we hear?

This lesson helps you understand the process...

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