They are called valves
There are atrioventricular valves on each side of the heart that keep blood from flowing from the ventricles back up into the atria. There are also semilunar valves that prevent blood from flowing from the pulmonary arteries and aorta back into the right and left ventricles, respectively.
valves
the semi lunar valves stop the blood flowing the wrong way !
They stop blood flowing the wrong way. If blood tries to go the wrong way for whatever reason, they automatically seal shut and prevent blood flow until the blood is flowing properly again.
There are valves in the blood vessels (like a one-way door) - that stop the blood flowing backwards.
Veins have valves which stop the blood from flowing backwards
veins contain valves that prevents blood flowing backwards between heartbeats.There are valves in the veins that stop the blood from flowing backwards.
There are valves in the heart - and the larger blood vessels that stop the blood flowing backwards.
yes with valves
Plasma helps stop blood from flowing out of your body when you have a cut.
They help people by feeding on your blood to stop the blood from flowing,usually after surgery. Doctors use these amazing creatures after a surgery to stop your blood from flowing through your wounded area. Your wound needs to heal fast.
Dark red blood flowing from a wound indicates bleeding from the veins. Applying direct pressure to the wound can help to stop the flow of blood.