Question

The valves in the heart open and close to move blood in between heart chambers. O a) three directions O b) two directions O c) four directions d) one direction

Answer 1

Hi,

The valves in the heart open and close to move blood in between heart chambers.

Answer:

d) one direction

Answer 2

d) one direction

HEART VALVES OPEN TO MOVE BLOOD ONLY IN ONE DIERECTION WHICH IS FORWARD DIRECTION BLOOD NEVER FLOW BACKWARD INSIDE HEART.