medullary folds

例句：

1. 1.The brain's medullary folds are responsible for the regulation of blood flow in the brain.
   大脑的髓质褶皱负责调节大脑中的血流。
2. 2.The optic nerve is surrounded by a layer of medullary folds that help to protect it from damage.
   视神经周围有一层髓质褶皱，有助于保护它免受损伤。
3. 3. The study found that the presence of medullary folds was associated with better cognitive performance in older adults.
   研究发现，髓质褶的存在与老年人的认知性能更好有关。