Mestruation cycle

Question

Which of the following is a true statement?

1.All mammals have menstrual cycles.

2.The endometrial lining is.she'd in menstrual cycles but reassured in estrous cycles.

3.estrous cycles are more frequent than menstrual cycles.

4.Ovulation occurs before the endometrial thickens in destroys cycles.

Answer 1

B. The endometrial lining is shed in menstrual cycles but reabsorbed in estrous cycles.