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.
A small amount of blood is taken from a vein in your arm with a needle. The blood is collected in tubes and sent to a lab. Ask your healthcare provider when and how you will get the result of your test. Some of the reasons your CK level may be higher than normal are: You have had a heart attack in the past 72 hours.