58. 下列哪一結構的功能與鈉離子(Na⁺)的再吸收最為相關? (A)亨利氏環上升肢(ascending limb of the loop of Henle) (B)亨利氏環下降肢(descending limb of the loop of Henle) (C)鮑氏囊(Bowman’s capsule) (D)集尿管(collecting duct)