A Pulse Moves in a String Toward a Free End

question 24

Multiple Choice

A pulse moves in a string toward a free end a ring on a post) as indicated in the sketch. On reflection, the pulse would most nearly be represented by

• A) 1.
• B) 2.
• C) 3.
• D) 4.
• E) 5.

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Definitions:

Semilunar Valve

Valves located at the bases of the aorta and the pulmonary artery that prevent the backflow of blood into the ventricles of the heart during contraction.

Pulmonary Vein

One of the veins that carry blood from the lungs to the left atrium of the heart.

Coronary Sinus

A large vein on the posterior side of the heart that collects blood from the heart muscle and empties it into the right atrium.

Angina Pectoris

A condition marked by severe chest pain due to insufficient blood supply to the heart, often associated with coronary artery disease.