4. Each of the following statements concerning the secondary ovarian follicles is
true, EXCEPT:
A
– contain the primary oocyte at large growth surrounded by the zona pellucida; B – their
follicular epithelium becomes stratified and is named the membrana granulosa; C
– fluid-
filled cavities appear among their granulosa cells; D
– small cavities begin to coalesce
eventually forming the antrum; E
– lack the theca layer.
5. Each of the following statements concerning the ovarian theca cells is true,
EXCEPT:
A
– are located in the theca interna of growing and mature follicles; B – their cytoplasm is
rich in sER, Golgi apparatus, vesicular mitochondria, and lipid drops; C
– secrete
androgens; D
– their secretory activity is under FSH control; E – their androgens are
transported to the granulosa cells where they become estrogens.
6. Each of the following statements concerning the ovarian mature follicle is true,
EXCEPT:
A
– represents the earliest stage of follicular development; B – bulges on the ovary surface
because of its large size; C
– its oocyte is surrounded by the zona pellucida and the
corona radiata; D
– its oocyte is acentrically positioned at the cumulus oophorum; E – its
antrum increases in size and is surrounded by the granulosa cells.
7. Each of the following statements concerning the ovulation is true, EXCEPT:
A
– it is controlled by the LH and FSH peaks; B – the secondary oocyte at metaphase II
leaves the ovary and enters the oviduct; C
– before ovulation the stigma disappears; D –
the stigma ruptures forming a small gap in the capsule, germinal epithelium, and follicle
wall; E
– the oocyte with its surrounding leaves the ovary via this gap.
8. Each of the following statements concerning the corpus luteum activity and its
hormonal regulation is true, EXCEPT:
A
– the corpus luteum formation is controlled by LH; B – mature corpus luteum secretes
progesterone; C
– the corpus luteum secretion is controlled by prolactine (LTH); D – high
blood progesterone levels stimulate the cyclic development of ovarian follicles; E
–
progesterone stimulates the endometrium to prepare it for future implantation.
9. Each of the following statements concerning the ovarian corpus luteum is true,
EXCEPT:
A
– the corpus luteum of pregnancy reaches the size of 2–3 cm and retains its functional
capacity for about half a year; B
– the corpus luteum of menstruation remains active for 28
days; C
– the granulosa lutein cells are large, pale, and centrally located; D – the theca
lutein cells are small, dark, and peripherally located; E
– the corpus luteum undergoes
involution after pregnancy or menstruation and is replaced by the corpus albicans.
10. Each of the following statements concerning the ovarian follicle atresia is true,
EXCEPT:
A
– oocyte degeneration appears later than degenerative changes in the follicular wall; B –
the oocyte undergoes degeneration and autolysis; C
– oocyte remnants are removed by
macrophages; D
– the zona pellucida is slowly broken down in the follicular cavity; E –
results in the corpus luteum formation.
Directions
: one or more of the given statements or completions is/are correct. Choose the
answer: A
– if only 1,2, and 3 are correct; B – if only 1 and 3 are correct; C – if only 2 and
4 are correct; D
– if only 4 is correct; E – if all are correct.
11. The following statements regarding the ovogenesis stage of proliferation are
true:
(1) begins and ends during early fetal life (2) is represented by oogonia that divide by
mitosis (3) completes before birth when all oogonia become primary oocytes (4) includes
the arrested phase called dictyotene
12. The following statements regarding the small growth of the ovogenesis are true: