When a blockage of the coronary arteries causes an area of heart muscle to die from lack of oxygen, it is called:

Gases released when polymer products burn include

a. Hydrogen chloride b. Hydrogen cyanide c. Sulfur dioxide d. All of these

Which of the following may indicate polycystic kidney disease?

A. Anuria B. Hematuria C. Oliguria D. Proteinuria E. Ketonuria