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They have gill flaps underneath their neck.
No. When the flaps of the aortic valve close, they prevent the flow of blood into the ventricle. The flaps of the atrioventricular valves close to prevent the flow of blood back into the atria.
The ear flaps help to direct sound into the inner ear; elephants have very good hearing. The ear flaps have many blood vessels that help to cool the elephant when flapped in the air. Also, a distressed or charging elephant will thrust out their ear-flaps to make them appear more threatening, and signalling their anger/distress.
They are called valves
Your heart keeps your blood "flowing"
Valves.
through flaps called valves which carry it into the veins
Valves?
a valve
Capillaries
valves
VALVES