Which of the following is not seen in humans: (A) Estrous Cycle, (B) Menstrual Cycle, (C) Endometrial cycle, (D) Ovarian Cycle
Answer is A. Ans (a) Estrous Cycle(Ref: Ganong, 25th ed/p.403)Estrous Cycle is seen in animals.It has three phases namely,#Proestrus - ovarian follicle enlarges#Estrus - period of sexual receptivity#Metestrus - postovulatory phase#Diestrus - a short period of inactivity before next proestrus