A) to coordinate the autorhythmic movements of the heart
B) to keep the right and left sides of the heart separated
C) to control the speed at which blood enter and leaves the heart
D) to permit blood to flow forward while preventing it from flowing backward
E) The opening and closing of the valves creates the normal patterns of an EKG.

A) They pull downward on the valve cusps, thereby preventing the AV valves from being pushed into the atria (prolapsing).
B) They open and close the AV valve due to the movement of the papillary muscle during contraction.
C) The chordae tendineae generate autorhythmicity within the heart.
D) The chordae tendineae act like a parachute and capture blood as it enters the right ventricle.
E) When the heart contracts, the chordate tendineae separate the flow of blood from the right and left sides of the heart.

A) diaphragm
B) heart
C) lungs
D) intestines
E) liver