Heart

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The cardiac reflex control centers are located within the

The highest pressure exerted by the heart is called the

Normal heart sounds are caused by which of the following events?

Which part of the heart is the last to become excited during a cardiac cycle?

The P wave of a normal EKG indicates

The pulmonary semilunar valve prevents backflow of blood into the

Which of the following is not part of the conduction system of the heart?

Blood from the cardiac muscle itself drains into the