Which phase of the menstrual cycle starts on the first day of the cycle and lasts for 13 to 14 days, ending in ovulation?

Appeared in: NHM UP Staff Nurse-2023 shift 1st

Explanation

The follicular phase is the first part of the ovarian cycle, starting on day 1 of menstruation.
It lasts for about 13 to 14 days, during which an ovarian follicle matures under the influence of Follicle-Stimulating Hormone (FSH).
The maturing follicle produces estrogen, which causes the uterine lining to thicken (proliferate).
This phase correctly culminates in ovulation, which is triggered by a surge in Luteinizing Hormone (LH).

Option A: The luteal phase occurs after ovulation, not before. It is the second half of the cycle (days 15-28).
Option C: The menstrual phase is only the initial part of the follicular phase (typically days 1-5) when the uterine lining is shed. It does not cover the entire 13-14 day period of follicle growth.
Option D: Ovulation is a singular event, the release of the egg, which typically occurs on day 14. It is not a phase that lasts for 13-14 days.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Phases of the menstrual cycle as background academic context rather than a clinical decision trigger.
Understanding the follicular phase is crucial for fertility awareness. The days leading up to and including ovulation are the most fertile time in a woman's cycle.
Many hormonal contraceptives work by suppressing FSH and LH, thereby preventing follicular development and ovulation.
Irregularities in the length of the follicular phase can indicate hormonal imbalances, such as Polycystic Ovary Syndrome (PCOS), and are a common cause of infertility.

How to Approach the Question

This is a factual recall question that tests your knowledge of the female reproductive cycle.
First, break down the question's key components: starts on day 1, lasts 13-14 days, and ends in ovulation.
Recall the two main cycles: the ovarian cycle (follicular and luteal phases) and the uterine cycle (menstrual, proliferative, and secretory phases).
Evaluate each option against the timeline provided in the question.
The luteal phase is the second half of the cycle, so it's incorrect.
The menstrual phase is only the first few days, so it's too short.

Concept Tested & Keywords

QHL53WS5Gc38P6KWvpAE5U

E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 40-48

E6 Physiology Essentials Sembulingam 10e Part 2 p. 123-125

E6 Pharmacology Nursing Lilley 11e Part 2 p. 230-232

Practise the full NHM UP Staff Nurse-2023 shift 1st

Attempt every question from this paper in a timed mock, then review the full solution for each one.