Korotkoff sound is produced due to
Stream line flow of blood
Increase in viscosity of blood
Murmur
Turbulent flow of blood
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
Cardiovascular system