Employee exposure to bloodborne pathogens from blood and Other Potentially Infectious Materials (OPIM) because employees are not using Universal Precautions. 1  Bloodborne pathogens are pathogenic microorganisms that are present in human blood and can cause disease in humans.
atonality. n. 1. (Music, other) absence of or disregard for an established musical key in a composition. 2. (Music, other) the principles of composition embodying this and providing a radical alternative to the diatonic system.
Watch More: http://www.youtube.com/Ehow. Tonal and atonal music have a few important differences that you're going to want to know. Learn the difference between tonal and atonal music with help from an experienced music teacher and mentor in this free video clip. Expert: Rachel Cui. Filmmaker: Ben Kasica.