This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fuel in Fed, Fasting and Starvation, Subject name: Biochemistry
Myocardium normally utilizes: 
Select and explain. 
A. Glucose, B. Lactose, C. Fatty acid, D. Glycogen
C: Fatty acid
Answer: C: Fatty acid 
Explanation: Hea uses fatty acids in fed and fasting state. It uses Ketone bodies during starvation. Fetal hea and hea failure, uses glucose as fuel Source of fuel in various tissues and cells under different conditions Fed Fasting Starvation Brain Glucose Glucose Ketone Bodies Hea Fatty Acids Fatty Acids Ketone Bodies Liver Glucose Fatty Acids Amino Acids Muscle Glucose Fatty Acids Fatty Acids and KB Adipose tissue Glucose Fatty Acids Fatty Acids RBC Glucose Glucose Glucose