Menstrual cycle
- The first menstruation is called : Answer: 2. Menarche Key idea: The first menstrual flow at puberty is menarche. Menopause is the permanent end of cycles, diapause is delayed... 1
- Which of the following statements are correct regarding female reproductive cycle?A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle.B. First menstrual cycle begins at puberty and is called menopause.C. Lack of me… Answer: 1. A, C and D only Key idea: Check each statement. A is correct: non-primate mammals show the oestrus cycle. B is wrong: the first m... 1
- Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle ? Answer: 1. High concentration of Estrogen Ovulation is triggered by the LH surge in mid-cycle, and that surge is itself caused by a high lev... 1
- Match the items given in Column I with those in Column II and select the correct option given below :Column I | Column IIa. Proliferative Phase | i. Breakdown of endometrial liningb. Secretory Phase | ii. Follicular Phasec. Menstruation | iii. Luteal… Answer: 2. a-ii b-iii c-i Key idea: Match the phases of the menstrual cycle in the uterus and the ovary. Proliferative phase (endometrium gr... 1
- Changes in GnRH pulse frequency in females is controlled by circulating levels of : Answer: 1. estrogen and progesterone Key idea: GnRH pulse frequency in females is controlled by the circulating levels of oestrogen and prog... 1