How many Korotkoff sounds are recognized, and how many are normally recorded?

1. Turbulent flow under a deflating cuff produces the Korotkoff sounds heard through a stethoscope. 2. Five such sounds are recognized in total. 3. Only two are normally written down: the first sound, which marks systolic pressure, and the last, which marks diastolic pressure. 4. Counting three or fewer recognized sounds understates the full set that Korotkoff described. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 20 "The Cardiovascular System: Blood Vessels and Circulation", section 20.2 Blood Flow, Blood Pressure, and Resistance_