This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrine System, Subject name: Physiology
Adrenal medulla secretes: 
Select and explain. 
A. Sex hormones, B. Thyroid stimulating hormones, C. Epinephrine, D. Glucocoicoid
C: Epinephrine
Answer: C: Epinephrine 
Explanation: Tyrosine - L-dopa - Dopamine - Noradrenaline - Adrenaline Coversion of Noradrenaline to Adrenaline requires the following enzyme - PNMT: Phenylethanolamine N- methyltransferase PNMT: Not present in sympathetic post ganglionic nerve fibers Therefore, sympathetic post-ganglionic nerve fibers release norepinephrine