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: Gynaecology & Obstetrics
Lamellar bodies in amniotic fluid, used to assess fetal lung maturity are derived from 
Select and explain. 
A. Syncytiotrophoblast, B. Pulmonary vascular endothelium, C. Type II pneumocytes, D. Chorionic epithelium
C: Type II pneumocytes
Answer: C: Type II pneumocytes 
Explanation: Lamellar body count is rapid, simple and accurate method to assess fetal lung maturity that is comparable to L/S ratio.