3-1-16-Menarche, Puberty, And Menstrual Disorders (Moulton) Flashcards
Decreasing levels of estradiol and progesterone from the regressing corpus luteum of the preceding cycle initiate an increase in ___ by a negative feedback mechanism, which stimulates follicular growth and estradiol secretion
FSH
___ stimulates the theca cells to produce androgens (Promotes cholesterol —-> androstenedione/testosterone)
___ stimulates the granulosa cells to convert androgens into estrogens (promotes androstenedione/testosterone —-> estrone (E1) and Estradiol (E2))
LH
FSH
During the ovarian cycle, ___ undergo sequential development, differentiation, and maturation until a mature graafian follicle is produced. The follicle then ruptures and releases an ovum
Primordial follicles
At about 8-10 weeks of fetal development, oocytes become surrounded by precursor granulosa cells. This oocyte-granulosa cell complex is called a ___
Primordial follicle
In the adult ovary, a graafian follicle forms. The innermost 3-4 layers of multiplying granulosa cells become cuboidal and adherent to the ovum and this is known as the ___
Cumulus oophorus
If pregnancy does not occur, menses ensues and the corpus luteum is gradually replaced by an avascular scar called ___
Corpus albicans
The endometrium is divided into these 2 zones:
Functionalis (outer layer) –> undergoes cyclic changes in morphology during the menstrual cycle and is sloughed off at menstruation. Contains spiral arteries
Basalis (inner layer) –> remains relatively unchanged during each cycle and after menstruation provides stem cells for the renewal of the functionalis. Contains Basal arteries
The cyclic changes in histophysiology of the endometrium can be divided into these 3 stages:
1) Menstrual phase
2) Proliferative or estrogenic phase
3) Secretory or progestational phase
___ phase is the only portion of the cycle that is visualized externally
Menstrual
___ phase is characterized by endometrial growth secondary to estrogenic stimulation. Increase in the length of the spiral arteries and numerous mitoses can be seen in these tissues
Proliferative
This phase follows ovulation, progesterone secretion by the corpus luteum stimulates the glandular cells to secrete mucus, glycogen and other substances. Glands become tortuous and lumens are dilated and filled with these substances. Stroma becomes edematous, mitosis is rare, spiral arteries continue to extend into superficial layer of the endometrium and become convoluted. Endometrial lining reaches its max thickness
Secretory phase
The initial reproductive health visit should occur between the ages of ___ years
13-15
The ACOG recommends a first Pap test at the age of __ years
21
___ is defined as absence of menarche by age 13 years without secondary sexual development OR by the age of 15 with secondary sexual development
Primary amenorrhea
___ is defined as the absence of menstruation x 6 months. It is rare for girls and adolesecents to remain amenorrheic for more than 3 months
Secondary amenorrhea–> if > 90 days, further workup is indicated–> check urine or serum beta-hCG to rule out pregnancy
List 4 causes of menstrual irregularity:
Pregnancy
Endocrine causes
Acquired conditions
Tumors