These 10 animal facts will amaze you. A cavity wall consists of two separate walls that have been built closely together with a space in between them. Each of these walls can be constructed of a different type of masonry, such as brick or concrete, or from other materials.
The CPK blood test is a laboratory test that measures creatine phosphokinase (CPK), which is one of the enzymes found in the brain, heart, and skeletal muscles. This is a useful test for helping doctors to diagnose problems such as muscle damage, heart attack, and related conditions. slide 1 of 4.
The CK-MB test is generally considered to be more useful when checking for damage to the heart because CK-MB is mostly found in the heart muscle cells; a high CK test result may indicate damage to the heart, but it could also mean that other muscles in the body are damaged. How is the test done?