________ is a condition in which the oxygen-rich blood is stopped, blocked, or restricted to a specific part of the body

The second heart sound is associated with what mechanical event of the cardiac cycle?

a. Atrioventricular valve closure b. Atrioventricular valve opening c. Semilunar valve closure d. Semilunar valve opening

Which of the following practices is inappropriate when establishing quality controls ranges?

A. Exclusion of any quality control results greater than ±2 standard deviation from the mean B. Compare your data to the manufacturer of the quality control material C. Gather quality control data for a long period of time if necessary D. Using control results from all shifts on which the assay is performed