23.正常情況下,下列何者決定了心臟跳動的頻率?
(A)竇房結(sinoatrial node)
(B)房室結(atrioventricular node)
(C)浦金氏纖維(Purkinje fiber)
(D)房室束(atrioventricular bundle)
答案:登入後查看
統計: A(209), B(10), C(12), D(5), E(0) #1045162
統計: A(209), B(10), C(12), D(5), E(0) #1045162
詳解 (共 2 筆)
#1610793
竇房結(sinoatrial node) 決定了心臟跳動的頻率(自主速率最高)
(B)房室結(atrioventricular node)=>心房核心室收縮動作電位間傳導延遲
(C)浦金氏纖維(Purkinje fiber)=>傳導最快
(D)房室束(atrioventricular bundle)=>在心室中膈頂端分左右分枝
13
0