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.
This test measures an enzyme in the blood. The enzyme is called creatine kinase (CK). Muscle cells make this enzyme. When muscle cells are injured or diseased, enzymes leak out of the cells and enter the bloodstream.ou have a muscle disease. If your CK level is high, the test may be repeated (as often as every 8 hours) to see if the injury is healing or getting worse. Source(s): http://www.med.umich.edu/1libr/aha/aha_c...