Korotkoff sound is produced due to: (A) Stream line flow of blood, (B) Increase in viscosity of blood, (C) Murmur, (D) Turbulent flow of blood
Answer is D. When the cuff pressure is great enough to close the aery during pa of the aerial pressure cycle, a sound is then heard with each pulsation. These sounds are called Korotkoff sounds, named after Nikolai Korotkoff, a Russian physicianRef: Guyton and Hall textbook of medical physiology 13th edition. Page:182