NURS 3450 Module 1 CH 4

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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 Signup and view all the answers

During which phase of the menstrual cycle does the endometrial surface undergo a rapid 8- to 10-fold thickening?

Proliferative phase Signup and view all the answers

What is the approximate time frame for implantation of a fertilized ovum in the menstrual cycle?

7-10 days after ovulation Signup and view all the answers

What is the primary regulator of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) production in females?

Hypothalamus and anterior pituitary gland Signup and view all the answers

What is the characteristic of the endometrium at the end of the secretory phase?

Heavy, soft velvet-like with blood and glandular secretions Signup and view all the answers

What is the frequency of more than one follicle being selected and ovulating in a menstrual cycle?

1 in 100 menstrual cycles Signup and view all the answers

What is the primary reason for the decrease in estrogen levels after ovulation?

The ovulation process itself Signup and view all the answers

In what percentage of women is midcycle bleeding visible?

10% Signup and view all the answers

How long does the luteal phase of the ovarian cycle typically last?

14 days (range of 13 to 15 days) Signup and view all the answers

When does the corpus luteum reach its peak of functional activity?

8 days after ovulation Signup and view all the answers

What is the typical duration of the proliferative phase of the endometrial cycle?

Days 1 to 14 Signup and view all the answers

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 Signup and view all the answers

What is the approximate number of days it takes for the endometrial surface to be completely restored during the proliferative phase?

4 days Signup and view all the answers

What triggers the hypothalamic-pituitary cycle?

The decline of progesterone and estrogen levels Signup and view all the answers

What is the primary function of estrogen during the first half of the menstrual cycle?

To mature an ovum Signup and view all the answers

What is the characteristic of the endometrium during the secretory phase?

Edematous, vascular, and functional Signup and view all the answers

What occurs if fertilization and implantation do not take place?

The corpus luteum regresses, and progesterone and estrogen levels decrease Signup and view all the answers

What change in basal body temperature is indicative of ovulation?

A slight increase in basal body temperature Signup and view all the answers

What is the role of progesterone during the secretory phase?

To prepare the endometrium for a fertilized ovum to implant Signup and view all the answers

What is the purpose of the uterine changes during the secretory phase?

To create a suitable protective and nutritive bed for a fertilized ovum Signup and view all the answers

What is the duration of the ischemic phase?

Until menstrual bleeding begins, marking day 1 of the next cycle Signup and view all the answers