Truncus corporis callosi

例句：

1. 1. The physiologist studied the relationship between the heart and the blood vessels in the human body.
   这位生理学家研究了心脏与人体血管之间的关系。
2. 2.During the experiment, the researchers observed the truncus corporis callosi to measure the heart rate.
   在实验过程中，研究人员观察了体节线来测量心率。
3. 3. The truncus corporis callosi is a crucial part of the human body that regulates blood flow.
   体节线是人体中调节血流的关键部分。