The valve between the atrium and the ventricle can ensure the blood flow in a certain direction, which of the following is the correct direction of blood flow
A. Left atrium → left ventricle
B. left ventricle → left atrium
C. left atrium → right atrium
D. left ventricle → right ventricle
Answer:A
The valve between the atrium and the ventricle can ensure the blood flow in a certain direction, which of the following is the correct direction of blood flow
A. Left atrium → left ventricle B. left ventricle → left atrium C. left atrium → right atrium D. left ventricle → right ventricle