frenulum veli medullaris superior

例句：

1. 1. The fetus's headis the first part of the developing brain.
   胎儿的头部是正在发育的大脑的第一部分。
2. 2. The study of the frenulumveli medullarissuperior is crucial for understanding fetal development.
   研究胎儿头骨上缘对于理解胎儿发育至关重要。
3. 3. The anatomy ofthe frenulum veli medullaris superior is a complexsubject that requires specialized knowledge.
   胎儿头骨上缘的解剖学是一个复杂的主题，需要专门的知识。