During which phase of the cardiac cycle does ventricular filling begin?

An aerosol is best defined as

a. a drug in liquid form. b. vapor suspended in a carrier gas. c. a suspension of solid or liquid particles in a carrier gas. d. an invisible drug particle.

Electrodes for limb leads should be attached to ____. 

A. a bony area on each limb B. a highly vascular area C. fleshy portions of the limbs D. the wrists and ankles E. the knees and elbows