This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Gynaecology & Obstetrics
hCG is secreted by? 
Select and explain. 
A. Syncytiotrophoblast, B. Yolk sac, C. Cytotrophoblast, D. Placenta
A: Syncytiotrophoblast
Answer: A: Syncytiotrophoblast 
Explanation: hCG is a glycoprotein that is produced by the syncytiotrophoblast. It has Alpha and Beta subunits hCG-aHCG is identical to theasubunit of LH, FSH, and TSH. hCG is primarily luteinizing and luteotropic and has little FSH activity. It can be detected in the blood as early as 6 days after conception. It appears to act on the same receptor as LH.