【名词&注释】
肾结石(kidney calculi)、继发性(secondary)、脾肾阳虚(yang deficiency of spleen and kidney)、肾小球(glomerular)、肾小管坏死(tubular necrosis)、密切相关(closely related)、肾阳虚衰(deficiency of the kidney-yang)、发育成熟、肾小管重吸收(tubular reabsorption)、间歇期(intermission)
[单选题]与泄泻发病密切相关的内因为( )
A. 肾阳虚衰(deficiency of the kidney-yang)
B. 脾胃虚弱
C. 肝脾不和
D. 脾肾阳虚
E. 心肾不交