【名词&注释】
临床意义(clinical significance)、经络学说(meridian theory)、五脏六腑(five-internal sixorgans)、十二经脉(twelve channels)、食欲不振(loss of appetite)、足阳明胃经(stomach channel of foot-yang ming)、足太阴脾经、足少阴肾经
[单选题]经络学说中的"血海",指的是
A. 足阳明胃经(stomach channel of foot-yang ming)
B. 督脉
C. 冲脉
D. 任脉
E. 足太阴脾经