(1) begins in embryogenesis (2) its essence is the prophase of the first meiotic division (3)
prophase I completion does not occur until puberty (4) primary oocytes remain in the
arrested prophase called dictyotene for several years
13. The following statements regarding the ovarian primordial follicles are true:
(1) are composed of the primary oocyte at the dictyotene surrounding by a single layer of
squamous follicular cells (2) are the earliest stage of follicular development (3)
predominate in number among ovarian follicles (4) are located in the ovarian medulla
14. The following statements regarding the ovarian primary follicles are true:
(1) their primary oocytes begin the large growth and considerably enlarge in volume (2)
oocytes and follicular cells produce the zona pellucida (3) follicular cells proliferate,
become cuboidal in shape, and form one layer (4) the theca layer appears
15. The following statements regarding the ovarian follicle granulosa cells are true:
(1) secrete liquor folliculi (2) are involved in selective transport between blood and the
oocyte (3) can convert androgens to estrogens (4) possess plasma membrane FSH
receptors
16. The following statements regarding the ovarian follicle theca are true:
(1) theca interna contains loose connective tissue, blood vessels, and theca cells (2) is
present only in mature (Graafian) follicles (3) theca externa consists of dense irregular
connective tissue (4) produces estrogens
17. The following statements regarding the events preceding follicle rupture in
ovulation are true:
(1) follicular fluid volume and pressure increase (2) myofibroblasts of the theca externa
contract (3) the follicular wall undergoes enzymatic proteolysis (4) the oocyte-cumulus
complex separates from the granulosa layer
18. The following events take place in the ovarian corpus luteum formation:
(1) the basement membrane of granulosa cells undergoes destruction (2) granulosa cells
and theca cells proliferate (3) blood vessels from the theca interna grow into the granulosa
layer (4) a rich network of sinusoidal fenestrated capillaries is established
19. The granulosa cells and theca cells undergo the following morphological
changes in the corpus luteum formation:
(1) increase in size (2) become filled with lipid droplets (3) accumulate sER and vesicular
mitochondria (4) lipochrome imparts the yellow colour to them in fresh specimens
20. The following statements regarding the ovarian follicle atresia are true:
(1) numerous follicles undergo atresia during fetal development, early postnatal life, and
puberty (2) atresia of primordial and primary follicles leaves no traces of their existence (3)
atresia of growing follicles results in their reorganisation into atretic bodies secreting
estrogens (4) atresia declines in the climacteric period
21. The following events take place in the ovarian follicle atresia:
(1) blood vessels, neutrophils, and macrophages invade the granulosa layer (2) granulosa
cell slough into the follicle antrum (3) theca cells acquire the ability to secrete estrogens (4)
the basement membrane separates from follicular cells, increases in thickness, and
becomes a glassy membrane
23. FEMALE REPRODUCTIVE SYSTEM
– II
Directions
: each of the following statements contains five suggested completions. Choose
the one that is best in each case.
1. Each of the following statements concerning the follicular phase of the ovarian
cycle is true, EXCEPT:
A
– lasts from the 1st to the 14th day of a cycle; B – actively secreting corpus luteum is
present in the ovary; C
– follicles at various stages of development, atretic follicles, and the