问题
单项选择题
The coronary sinus opens into ().
A.right atrium
B.superior vena cava
C.inferior vena cava
D.right ventricle
E.left atrium
答案
参考答案:A
The coronary sinus opens into ().
A.right atrium
B.superior vena cava
C.inferior vena cava
D.right ventricle
E.left atrium
参考答案:A