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.
Creatine Phosphokinase (CPK) Creatine phosphokinase (a.k.a., creatine kinase, CPK, or CK) is an enzyme (a protein that helps to elicit chemical changes in your body) found in your heart, brain, and skeletal muscles. When muscle tissue is damaged, CPK leaks into your blood.