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
Testosterone secreted by; 
Select and explain. 
A. Leydig cell, B. Seoli cell, C. Theca lutein, D. Granulosa cell
A: Leydig cell
Answer: A: Leydig cell 
Explanation: Testosterone is secreted by Leydig cell In the testes, Leydig cells arise from the original mesoderm of the genital ridge and lie between the testicular cords. Leydig cells begin to secrete testosterone by 8-week gestation due to stimulation of the testes by human chorionic gonadotropin (hCG).