Chapter 14, Problem 8RA

The sounds of Korotkoff are produced by

$\begin{array}{l}\text{a}\text{. closing of the sernilunar valves}\text{.}\hfill \\ \text{b}\text{. closing of the AV valves}\text{.}\hfill \\ \text{c}\text{. the turbulent flow of blood through an artery}\text{.}\hfill \\ \text{d}\text{. elastic recoil of the aorta}\text{.}\hfill \end{array}$