401. Which phase of the menstrual cycle is characterized by growth of ovarian follicles after the menstrual phase?
ⓐ. Follicular phase
ⓑ. Menstrual phase
ⓒ. Luteal phase
ⓓ. Gestation phase
Correct Answer: Follicular phase
Explanation: The follicular phase begins after the menstrual phase and is marked by the growth and maturation of ovarian follicles. During this time, one of the follicles progresses toward the mature Graafian stage. This phase is therefore closely linked with preparation for ovulation. It also corresponds to proliferative changes in the uterine lining.
402. During the follicular phase, the endometrium mainly undergoes
ⓐ. shedding and bleeding
ⓑ. regeneration and proliferation
ⓒ. placental formation
ⓓ. strong labour contractions
Correct Answer: regeneration and proliferation
Explanation: After the menstrual phase, the endometrium begins to rebuild. Its cells proliferate and the lining becomes thicker in preparation for possible implantation later in the cycle. These changes are described as proliferative changes of the uterus. This is why the follicular phase is also called the proliferative phase in the uterine context.
403. Which hormone rising during the follicular phase is most directly responsible for proliferative changes in the endometrium?
ⓐ. Progesterone
ⓑ. Oxytocin
ⓒ. Estrogen
ⓓ. Prolactin
Correct Answer: Estrogen
Explanation: Growing ovarian follicles secrete increasing amounts of estrogen during the follicular phase. This hormone stimulates regeneration and thickening of the endometrium after menstruation. Progesterone becomes more important later, during the luteal phase. Thus, estrogen is the major hormone linked with proliferative uterine changes at this stage.
404. Which pituitary hormone is most closely associated with stimulating follicular growth in the ovary during the follicular phase?
ⓐ. LH
ⓑ. FSH
ⓒ. hCG
ⓓ. ADH
Correct Answer: FSH
Explanation: FSH from the anterior pituitary plays a key role in promoting the growth of ovarian follicles. Under its influence, follicles enlarge and move through developmental stages toward maturity. This ovarian growth is a major hallmark of the follicular phase. Although LH also has reproductive importance, follicular growth is most closely associated here with FSH.
405. Which sequence best represents the main ovarian and uterine events of the follicular phase?
ⓐ. Corpus luteum regression → hormone fall → endometrial shedding
ⓑ. Graafian follicle rupture → sperm entry → implantation
ⓒ. Follicular growth → rising estrogen → endometrial proliferation
ⓓ. Placenta formation → progesterone rise → lactation
Correct Answer: Follicular growth → rising estrogen → endometrial proliferation
Explanation: The follicular phase links ovarian and uterine changes in a coordinated way. As follicles grow in the ovary, estrogen secretion rises. This increasing estrogen stimulates the endometrium to regenerate and proliferate. The phase therefore connects follicular maturation with rebuilding of the uterine lining.
406. Which statement correctly compares the menstrual phase and follicular phase of the menstrual cycle?
ⓐ. The menstrual phase involves endometrial growth, whereas the follicular phase involves shedding
ⓑ. The menstrual phase follows ovulation, whereas the follicular phase follows childbirth
ⓒ. The menstrual phase is dominated by placental hormones, whereas the follicular phase is not hormonally controlled
ⓓ. The menstrual phase involves shedding of the endometrium, whereas the follicular phase involves follicular growth and endometrial repair
Correct Answer: The menstrual phase involves shedding of the endometrium, whereas the follicular phase involves follicular growth and endometrial repair
Explanation: The menstrual and follicular phases are consecutive but physiologically different. Menstruation removes the old endometrial lining after an unfertilised cycle. The follicular phase then begins the rebuilding process while ovarian follicles are growing toward maturity. This makes the follicular phase a stage of repair and preparation rather than breakdown.
407. In the ovarian follicular sequence during this phase, the developing follicle progresses toward the
ⓐ. corpus albicans
ⓑ. placenta
ⓒ. zygote
ⓓ. Graafian follicle
Correct Answer: Graafian follicle
Explanation: During the follicular phase, ovarian follicles enlarge and mature step by step. The developmental progression ultimately leads to formation of a mature Graafian follicle before ovulation. Structures like the zygote and placenta belong to later reproductive events after fertilisation. So the relevant follicular goal of this phase is the Graafian follicle.
408. Fill in the blank with the most accurate option: The follicular phase of the menstrual cycle is also called the ______ phase of the uterus.
ⓐ. secretory
ⓑ. menstrual
ⓒ. proliferative
ⓓ. gestational
Correct Answer: proliferative
Explanation: In uterine terms, the follicular phase corresponds to regeneration and growth of the endometrial lining. Because the endometrium is actively rebuilding and thickening, this uterine phase is called the proliferative phase. The term highlights cell growth rather than shedding or secretion. It links ovarian follicular events with uterine preparation.
409. Assertion: Rising estrogen levels during the follicular phase help rebuild the uterine lining. Reason: Estrogen secreted by growing follicles promotes regeneration and proliferation of the endometrium.
ⓐ. Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
ⓑ. Both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
ⓒ. Assertion is true, but the Reason is false.
ⓓ. Assertion is false, but the Reason is true.
Correct Answer: Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
Explanation: The assertion is correct because the follicular phase is associated with restoration of the endometrium after menstruation. The reason is also correct since growing follicles release estrogen, and this hormone drives proliferative changes in the uterine lining. The ovarian and uterine events are therefore functionally connected. Estrogen provides the link between follicular growth and endometrial rebuilding.
410. A female reproductive cycle shows active follicular maturation in the ovary and rebuilding of the endometrium after menstrual bleeding. This stage is the
ⓐ. luteal phase
ⓑ. menstrual phase
ⓒ. ovulatory phase
ⓓ. follicular phase
Correct Answer: follicular phase
Explanation: The combination of ovarian follicle growth and endometrial regeneration identifies the follicular phase. This phase follows menstruation and prepares the reproductive system for ovulation. It is therefore a phase of growth in both the ovary and the uterus. The later luteal phase differs because it is dominated by corpus luteum activity and secretory endometrial changes.
411. Which phase of the menstrual cycle acts as the brief transition between the follicular phase and the luteal phase?
ⓐ. Ovulatory phase
ⓑ. Menstrual phase
ⓒ. Secretory phase
ⓓ. Implantation phase
Correct Answer: Ovulatory phase
Explanation: The ovulatory phase is the short mid-cycle event that links the follicular and luteal phases. It occurs after follicular maturation and before corpus luteum activity becomes established. This makes it a transitional point in the menstrual cycle. Its central event is release of the secondary oocyte from the mature follicle.
412. In a typical 28-day menstrual cycle, the phase most closely associated with day 14 is the
ⓐ. menstrual phase
ⓑ. ovulatory phase
ⓒ. late luteal phase
ⓓ. gestational phase
Correct Answer: ovulatory phase
Explanation: In a 28-day cycle, ovulation usually occurs around day 14. This is why the ovulatory phase is often placed near the middle of the cycle. It marks the release of the secondary oocyte from the ovary. Although exact timing can vary, day 14 remains the classic reference point.
413. Which hormonal event most directly marks the ovulatory phase?
ⓐ. Fall in hCG secretion
ⓑ. Rise in prolactin secretion
ⓒ. LH surge
ⓓ. Regression of corpus luteum
Correct Answer: LH surge
Explanation: The ovulatory phase is defined hormonally by a sharp surge of luteinizing hormone. This LH surge is the immediate trigger for rupture of the mature Graafian follicle. As a result, the secondary oocyte is released from the ovary. Other hormone changes occur in the cycle, but the LH surge is the signature event here.
414. A woman with a regular 28-day cycle is most likely to have the highest chance of fertilisation if insemination occurs
ⓐ. near the time of ovulation around the middle of the cycle
ⓑ. only during the menstrual phase
ⓒ. only after menopause
ⓓ. only during early pregnancy
Correct Answer: near the time of ovulation around the middle of the cycle
Explanation: Fertilisation is most likely when sperm are present close to the time the secondary oocyte is released. In a typical 28-day cycle, this corresponds to the mid-cycle ovulatory period. This is why the fertility window is often described as being near ovulation. The menstrual phase and menopause are not periods of highest fertility.
415. Which statement best distinguishes the ovulatory phase from the follicular phase?
ⓐ. The ovulatory phase is mainly a phase of endometrial shedding, whereas the follicular phase is not
ⓑ. The ovulatory phase is marked by a brief release event, whereas the follicular phase mainly involves follicular growth
ⓒ. The ovulatory phase is dominated by corpus luteum regression, whereas the follicular phase is dominated by implantation
ⓓ. The ovulatory phase occurs after childbirth, whereas the follicular phase occurs before puberty
Correct Answer: The ovulatory phase is marked by a brief release event, whereas the follicular phase mainly involves follicular growth
Explanation: The follicular phase is a longer period during which ovarian follicles grow and mature. The ovulatory phase, in contrast, is a short event centered on release of the secondary oocyte. This makes the ovulatory phase more event-like and the follicular phase more preparatory. The two phases are consecutive but not identical in function.
416. Which statement best distinguishes the ovulatory phase from the luteal phase?
ⓐ. The ovulatory phase involves rupture of the mature follicle, whereas the luteal phase involves activity of the corpus luteum
ⓑ. The ovulatory phase involves endometrial shedding, whereas the luteal phase involves ovum formation before birth
ⓒ. The ovulatory phase involves fertilisation in the uterus, whereas the luteal phase involves implantation in the ovary
ⓓ. The ovulatory phase is driven by prolactin, whereas the luteal phase is driven by oxytocin
Correct Answer: The ovulatory phase involves rupture of the mature follicle, whereas the luteal phase involves activity of the corpus luteum
Explanation: Ovulation is centered on rupture of the mature Graafian follicle and release of the secondary oocyte. After this event, the cycle enters the luteal phase, during which the ruptured follicle transforms into the corpus luteum. The focus therefore shifts from release to post-ovulatory hormonal activity. This comparison helps separate the two adjacent phases of the cycle.
417. During the ovulatory phase, the cell released from the ovary is the
ⓐ. primary oocyte
ⓑ. ovum
ⓒ. zygote
ⓓ. secondary oocyte
Correct Answer: secondary oocyte
Explanation: The ovulated cell in humans is the secondary oocyte, not the final ovum in the strict developmental sense. It has completed meiosis I and remains arrested in metaphase II. Completion of meiosis II occurs only after sperm entry. This is an important distinction in questions linking ovulation with oogenesis.
418. Which option best explains why the ovulatory phase is considered the peak fertility period of the cycle?
ⓐ. It is the phase in which the endometrium is shed most extensively
ⓑ. It is the time when a secondary oocyte becomes available for possible fertilisation
ⓒ. It is the phase in which menopause begins naturally
ⓓ. It is the phase in which placental hormones dominate the body
Correct Answer: It is the time when a secondary oocyte becomes available for possible fertilisation
Explanation: Fertility rises near ovulation because the female gamete is released and becomes available in the reproductive tract. If sperm are present during this period, fertilisation becomes much more likely. This is why the ovulatory phase is closely linked with the peak fertility window. The other listed events do not define fertile timing in the normal cycle.
419. Assertion: Ovulation is a brief event rather than a long continuous phase like follicular growth. Reason: It mainly refers to the mid-cycle release of the secondary oocyte following the LH surge.
ⓐ. Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
ⓑ. Both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
ⓒ. Assertion is true, but the Reason is false.
ⓓ. Assertion is false, but the Reason is true.
Correct Answer: Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
Explanation: The ovulatory phase is short because it is centered on a specific mid-cycle event rather than a prolonged developmental interval. That event is the release of the secondary oocyte, which occurs after the LH surge. In contrast, follicular growth extends over a longer preparatory span. The reason therefore directly explains the brief nature of ovulation.
420. Which sequence correctly places the ovulatory phase within the menstrual cycle?
ⓐ. Luteal phase → ovulatory phase → follicular phase
ⓑ. Menstrual phase → ovulatory phase → menarche
ⓒ. Follicular phase → ovulatory phase → luteal phase
ⓓ. Menstrual phase → menopause → ovulatory phase
Correct Answer: Follicular phase → ovulatory phase → luteal phase
Explanation: The ovulatory phase comes after the follicular phase, when the dominant follicle has matured sufficiently. It is followed by the luteal phase, which begins after the follicle ruptures and the corpus luteum develops. This placement shows ovulation as the central turning point of the cycle. The sequence is therefore follicular, ovulatory, and then luteal.
