18 Questions
What is the duration of the proliferative phase?
5th to 13th day of the menstrual cycle
What happens to secondary follicles during the proliferative phase?
One usually develops into a graafian follicle, while the others degenerate.
What hormone extends the life of the corpus luteum if fertilization occurs?
Human chorionic gonadotropin (hCG)
What does the presence of hCG in maternal blood and urine indicate?
Pregnancy
What initiates the significant increase in the secretion of follicle stimulating hormone (FSH) at the onset of puberty?
Gonadotropin releasing hormone (GnRH)
How often should the sanitary napkin be changed during menstruation to maintain hygiene?
Every 4-5 hours
What is the duration of the secretory phase or luteal phase?
14 days
What happens to the remaining tissue of the graafian follicle after ovulation?
It transforms into corpus luteum under the effect of LH.
What hormones are secreted by the corpus luteum during the secretory phase?
Progesterone, small amount of estrogens, and inhibin.
What are the effects of progesterone and estrogens on the endometrial glands?
They cause the endometrial glands to grow, become coiled, and start uterine secretions.
What is the thickness of the endometrium during the secretory phase?
Up to 8-10 mm
What hormone stops the secretion of FSH during the secretory phase?
Inhibin
What is the menstrual phase characterized by?
shedding of the ovulated egg along with the menstrum
What happens to the primordial follicles during the menstrual phase under the influence of FSH?
develop into primary and few into secondary follicles
What is the phase of degeneration of follicles called?
atresia
Which hormone is secreted by developing secondary follicles during the menstrual phase?
estrogen
What stimulates the release of FSH for the proliferation of new follicles during the menstrual phase?
GnRH
What happens to the endometrium under the effect of increasing quantity of estrogens during the menstrual phase?
begins to regenerate involving formation of glands and blood vessels
Learn about the follicular phase in the menstrual cycle, which is the duration between the end of menstruation and ovulation. Understand the development of secondary follicles and the role of the graafian follicle. Explore the variability and timeline of this phase.
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