Answer:
The correct answer is "chordae tendineae".
Explanation:
The chordae tendineae, also known as tendinous cords or "the heart strings", are fibrous cords comprised of connective tissue where papillary muscles attach to the cusps of the atrioventricular valves. The papillary muscles are located in the ventricles of the heart, and have an important role in regulating and producing the heart beat.
