求英语大神帮忙分析句子结构，谢谢！

Question

We then tested whether the treatment also
promoted axon regrowth of descending axons
important for locomotion.

Answer 1

We then tested whether the treatment also promoted axon regrowth of descending axons important for locomotion.
主句就是we tested ,
then是时间副词,
whether 引导宾语从句 译为 是否，

宾语从句 the treatment also promoted axon regrowth of descending axons important for locomotion。 主干 为 treatment promoted axon regrowth
of descending axons作axon regrowth 的限制定语，
important for locomotion作descending axons的限制定语，

我们紧接着测试这种刺激是否也会促进对于运动很重要的降序轴突的轴突再生。