Leydig cells are derived embryologically from: (A) Mesoderm of gonadal ridge, (B) Endoderm of Genital tubercle, (C) Germ cells, (D) None of the above
Answer is A. Ans. is 'a' i.e., Mesoderm of gonadal ridge Testosterone producing cells, called leyding cells, develop from mesoderm of the gonadal ridge and are located between sex cords.They produce testosterone by week 8.