Question

During 'P' phase of the menstrual cycle, if the pregnancy does not occur, the 'Q' withers and dies, usually around day 22 in a 28-day cycle. The drop in 'R' levels causes the lining of the uterus to shed. This is known as 'S'.

• A. P--> menstrual, Q--> graafian follicle, R--> estrogen, S--> menarche
• B. P--> luteal, Q--> corpus luteum, R--> progesterone, S--> menstruation
• C. P--> ovulatory, Q--> endometrium, R--> follicle stimulating hormone, S--> menopause
• D. P--> follicular, Q --> secondary oocyte, R--> luteinising hormone, S--> menstruation

Answer 1

The correct option is B P--> luteal, Q--> corpus luteum, R--> progesterone, S--> menstruation

The luteal phase is a stage of the menstrual cycle in females. It occurs after ovulation and before the start of the next menstrual phase.
During the 'luteal' phase of the menstrual cycle, if the pregnancy does not occur, the 'corpus luteum' withers and dies, usually around day 22 in a 28-day cycle. The drop in 'progesterone' levels causes the lining of the uterus to shed. This is known as 'menstual cycle'.