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Final answer:
Chordae tendineae are essential in preventing backflow of blood in the heart by holding the atrioventricular valves in place during ventricular contraction.
Explanation:
Chordae tendineae are string-like extensions of tough connective tissue that play a crucial role in preventing backflow of blood in the heart. They are attached to the flaps of the atrioventricular valves and extend to the papillary muscles, ensuring that the valves do not move up into the atria during ventricular contraction.
During the contraction of the ventricles, pressure rises, and the tension generated on the chordae tendineae by the papillary muscles helps hold the cusps of the valves in place, preventing regurgitation of blood into the atria. This mechanism is especially important for the atrioventricular valves, such as the tricuspid and mitral valves, compared to the semilunar valves.
Learn more about Chordae Tendineae here:
https://brainly.com/question/38348399
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