A nurse palpates a patient's radial pulse and notes that each beat follows ventricular contraction. Which event produces the palpable pulse wave?
Correct answer: B. Ventricular ejection into an artery
- A. Atrial filling
- B. Ventricular ejection into an artery
- C. Venous return to the atrium
- D. Closure of the atrioventricular valves
Explanation
The pulse wave is produced when ventricular ejection stretches the elastic arterial wall and the pressure wave travels along the artery. It is not the same as blood physically travelling from the ventricle to the wrist. Atrioventricular valve closure contributes to S1 but does not create the pulse wave.
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About Cardiovascular System
The cardiovascular system covers the chambers, valves and major vessels of the heart, the cardiac cycle, conduction pathway, blood pressure and the circulation through pulmonary and systemic circuits. It also explains artery, vein and capillary structure, exchange at capillary beds, and how the cardiac cycle differs from general blood flow.
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