問題詳情

5.The heart rate is controlled by
(A) the activity of sympathetic nerves
(B) plasma levels of epinephrine
(C) the activity of parasympathetic nerves
(D) the activity of cardiovascular reflex
(E) all of the above.

參考答案

答案:[無官方正解]
難度:計算中-1
書單:沒有書單,新增