This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
The functions of simple squamous epithelium includes all except 
Select and explain. 
A. Exchange, B. Lubrication, C. Barrier, D. Secretion
D: Secretion
Answer: D: Secretion 
Explanation: Major functions of simple squamous epithelium includes

Exchange, barrier in CNS 
Exchange and lubrication 
Barrier