Question

What is the cardiac cell isoenzyme known as?

1) CPK-MB
2) CPK-MM
3) CPK-BB
4) CPK-CK

Answer 1

CPK-MB is the cardiac cell isoenzyme known as the marker enzyme for diagnosing a heart attack. Its elevated levels in the blood indicate damage to the heart muscle.

Step-by-step explanation:

The cardiac cell isoenzyme known as CPK-MB (Creatine Phosphokinase-MB), is the marker enzyme for the diagnosis of myocardial infarction or heart attack. CPK-MB is predominantly present in the cardiac muscle. When there is damage to the heart muscle, CPK-MB is released into the blood, and its elevated levels indicate a heart attack.