Question:easy
Day 20 of the menstrual cycle falls under which phase?
Day 20 of the menstrual cycle falls under which phase?
Show Hint
Ovulation is day 14; anything from day 15 to 28 is the luteal phase.
Updated On: Jun 23, 2026
- Menstrual phase
- Follicular phase
- Ovulation phase
- Luteal phase
Show Solution
The Correct Option is D
Solution and Explanation
Step 1: Divide the 28 day cycle by landmarks. Bleeding occupies the first few days, follicular growth fills the first two weeks, ovulation marks the midpoint, and the second half is dominated by the corpus luteum.
Step 2: Map the timeline: days 1-5 bleeding, days 1-13 follicular development, day 14 ovulation, days 15-28 the corpus luteum (luteal/secretory) phase.
Step 3: Day 20 sits six days past ovulation, squarely inside the post-ovulatory secretory window, when progesterone from the corpus luteum prepares the endometrium. Therefore day 20 belongs to the luteal phase.
\[\boxed{\text{Luteal phase}}\]
Step 2: Map the timeline: days 1-5 bleeding, days 1-13 follicular development, day 14 ovulation, days 15-28 the corpus luteum (luteal/secretory) phase.
Step 3: Day 20 sits six days past ovulation, squarely inside the post-ovulatory secretory window, when progesterone from the corpus luteum prepares the endometrium. Therefore day 20 belongs to the luteal phase.
\[\boxed{\text{Luteal phase}}\]
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