24 Questions
What is the primary source of estrogen stimulation during the proliferative phase?
Ovarian follicles
What is the approximate duration of the secretory phase in the menstrual cycle?
14 days
What event triggers the separation of the functional layer from the basal layer, leading to menstrual bleeding?
Spiral artery spasm due to decreased progesterone and estrogen levels
What is the primary function of the corpus luteum in the menstrual cycle?
Secretion of estrogen and progesterone
During which phase of the menstrual cycle does the endometrial surface undergo a rapid 8- to 10-fold thickening?
Proliferative phase
What is the approximate time frame for implantation of a fertilized ovum in the menstrual cycle?
7-10 days after ovulation
What is the primary regulator of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) production in females?
Hypothalamus and anterior pituitary gland
What is the characteristic of the endometrium at the end of the secretory phase?
Heavy, soft velvet-like with blood and glandular secretions
What is the frequency of more than one follicle being selected and ovulating in a menstrual cycle?
1 in 100 menstrual cycles
What is the primary reason for the decrease in estrogen levels after ovulation?
The ovulation process itself
In what percentage of women is midcycle bleeding visible?
10%
How long does the luteal phase of the ovarian cycle typically last?
14 days (range of 13 to 15 days)
When does the corpus luteum reach its peak of functional activity?
8 days after ovulation
What is the typical duration of the proliferative phase of the endometrial cycle?
Days 1 to 14
What is the primary function of the basal layer of the endometrium during menstruation?
It is retained and serves as the site for regeneration of the endometrium
What is the approximate number of days it takes for the endometrial surface to be completely restored during the proliferative phase?
4 days
What triggers the hypothalamic-pituitary cycle?
The decline of progesterone and estrogen levels
What is the primary function of estrogen during the first half of the menstrual cycle?
To mature an ovum
What is the characteristic of the endometrium during the secretory phase?
Edematous, vascular, and functional
What occurs if fertilization and implantation do not take place?
The corpus luteum regresses, and progesterone and estrogen levels decrease
What change in basal body temperature is indicative of ovulation?
A slight increase in basal body temperature
What is the role of progesterone during the secretory phase?
To prepare the endometrium for a fertilized ovum to implant
What is the purpose of the uterine changes during the secretory phase?
To create a suitable protective and nutritive bed for a fertilized ovum
What is the duration of the ischemic phase?
Until menstrual bleeding begins, marking day 1 of the next cycle
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
