medulla renis的用法和樣例：
例句
- Countercurrent exchange in the vasa recta preserves hyperosmolarity of the renal medulla.
保持腎髓質(zhì)的高滲作用，并將水，包括集合管和髓袢降支重吸收的水帶走。 - This rare renal tumor shows differentiation towards medullary collecting tubules.It is usually centered on the medulla with extension towards the cortex.
腎集合管癌較少見(jiàn)，主要發(fā)生于腎髓質(zhì)內，病變可向腎皮質(zhì)擴展。
